Sunday, February 8, 2009

Homebrew Digest #5498 (February 08, 2009)

HOMEBREW Digest #5498 Sun 08 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:

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DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to:

HBD Server Fund
PO Box 871309
Canton Township, MI 48187-6309

or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
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***************************************************************


Contents:
Re: Leftovers beer (Alan Semok)
Thermometer calibration ("A. J. deLange")
RE: Vittles Vault Size ("Michael Beck")
(slaycock)
Diatomacious Earth for spider mite control (slaycock)
RE: Leftovers beer (Stephen Jorgensen)


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----------------------------------------------------------------------


Date: Fri, 06 Feb 2009 23:46:41 -0500
From: Alan Semok <asemok at mac.com>
Subject: Re: Leftovers beer

Fri, 6 Feb 2009 07:13:05, <beaverplt at yahoo.com> wrote:

> Has anyone ever cleaned out their beer cupboard by just using all
> your
> leftovers to make a brew? I...This seems like a fun thing to try.

Go for it.
I've done just that many times and the result is always interesting.
And usually pretty damned good.

This year, I took the concept a step further by saving the bottoms of
every finished brew I made this past year (the dregs or botttom
couple of quarts of each corny, if you will) into a clean corny. I
manage to brew quite a bit, so I had a pretty good quantity, maybe
ending up with 2 or 2 1/2 gallons. It had to settle out for a while,
and was a blend of probably 4 different types of ale...but man...the
end result of this mish-mash is pretty remarkable.
This will without a doubt become a yearly tradition now, for as
long as I'm alive and able to brew.

For more than 20 years my holiday/winter brew has contained at least
10% volume of the previous year's batch (a kind of solera, if you
will) but this new amalgam of every brew of the precious year (except
for the saved winter brew, reserved for the coming year's batch) is
pretty interesting, especially since it is comprised completely of
well aged beer (anywhere from 3 to 12 months old).

If you brew a good volume of beer in a year, I can heartily recommend
trying this!

cheers,
AL

------------------------------

Date: Sat, 07 Feb 2009 08:29:06 +0000
From: "A. J. deLange" <ajdel at mac.com>
Subject: Thermometer calibration

Jason has found his "reference" thermometer to be 8 degrees low at
boiling. The first question to Jason is, of course, "Where do you
live?". If the answer is "Denver" or some other place at similar
altitude then nothing is wrong, Water does boil at about 202 F at a
mile high. If, OTOH, you live near sea level first check that the
mercury or alcohol column in the thermometer hasn't some how become
separated and if it hasn't then pitch that thermometer and get a new
one. Having a new thermometer won't solve all calibration problems but
your calibration can never be better than the standard you are
calibrating against. Best would be an RTD based instrument traceable
to NIST shipped with a calibration certificate. Naturally, this will
be somewhat expensive. Second best would be laboratory thermometers
traceable to NIST. These are, relative to the electronic thermometers,
difficult to read because you must immerse them exactly to the marked
immersion point if they are partial immersion or completely if they
are full immersion for best accuracy. In my own setup there is no way
I can read a properly immersed partial immersion thermometer down in
my mash tun so I must remove the temperature probes (RTD's) to a
separate container before comparing to the thermometer.

Conceivably, I could put RTD probe, and lab thermometer into a beaker
with a stir bar on a heater/stir plate and raise the temperature
recording thermometer and RTD readings from near freezing (by adding
ice) up to boiling, then fit a curve to the error and apply
corrections calculated from the fit to the RTD readings when the RTD
is back in the mash tun as the temperature display is done by the
computer but this hardly seems necessary as I simply note the recorded
boiling temperature and if it is within a degree of 212 (I'm near sea
level and the molar strength of wort constituents isn't enough to
shift the boiling point appreciably) I call it good enough. Even if I
am off a bit it is the same bit each time I brew (a shift in
"calibration" would be detectable as a shift in boiling point). If I
think I am saccharrifying at 145 but it's really 144.5 and I find the
beer too dry I'll just go to 147 in the next brew and see what
happens. Even though it may be 146.5 in fact I have effected a 2
degree increase in temperature. IOW, as long as the calibration
doesn't shift (detectable by the BP check) I'm OK with relative moves.

A.J.


------------------------------

Date: Sat, 7 Feb 2009 09:04:00 -0600
From: "Michael Beck" <michaelr.beck at cox.net>
Subject: RE: Vittles Vault Size

Hello A.J., here's my 2 cents. I use Vittles Vaults to store my grain.
They are
very convenient for storage both because they are air tight and because
certain
models are stackable. I have a 40 pounder stackable that was the largest I
could buy locally at the time. It holds a bit over 45 lbs of grain, so if
you
end up getting stackable bins choose the 60 pound containers. I would guess
the 50 pound regular vault would have a proportional amount of overhead.

------------------------------

Date: Sat, 7 Feb 2009 09:43:16 -0600 (CST)
From: slaycock at discoverynet.com
Subject:

"Greg Brewer <gbrewer1 at gmail.com>
Subject: Diatomaceous Earth

Any thoughts about using diatomaceous earth for controlling spider
mites on hops?"

DE is what my mother has used exclusively on her garden for the past 40
years or so.
She sprinkles it on early in the morning while things are still wet with
dew & reapplies after a hard enough rain to wash it off the plants.
She has excellent insect control with this method and a healthy feed out
of the garden as a result of this non-poison approach. Her broccoli,
brusselsprouts, caulflower, potato's are all virtually bug free.

She tells me that the egg laying moths will just hover above the plants
checking them out, but never landing.

I'd expect spider mites would suffer the same fate. I've used preditory
aphids in the past to attempt to control the spider mites with no success.
The DE will also kill beneficial insects on your hop bines...just so ya know.

Make sure your using "food grade" DE and like said here earlier, make sure
you dont breathe the dust while your applying the DE to your plants as it
will damage your lungs.

DE also has many trace minerals and loads of silica to enrich your garden
soil and produce a healthier plant/fruit.

Steve in KC
Highwater Brewhaus

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This message has been scanned for viruses and
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------------------------------

Date: Sat, 7 Feb 2009 10:36:29 -0600 (CST)
From: slaycock at discoverynet.com
Subject: Diatomacious Earth for spider mite control

"Greg Brewer <gbrewer1 at gmail.com>
Subject: Diatomaceous Earth

Any thoughts about using diatomaceous earth for controlling spider
mites on hops?"


Greg,
DE is what my mother has used exclusively on her garden for the past 40
years or so.
She has excellent insect control with this method and a healthy feed out
of the garden as a result of this non-poison approach (i think the modern
day p.c. term is organic gardening`). Her broccoli, brussel sprouts,
cauliflower, potato's are all virtually bug free.

She tells me that the egg laying moths will just hover above the plants
checking them out, but never landing.

I read that it controls "mites" and "spiders",I'd expect spider mites
would suffer the same fate. I've used predatory aphids in the past to
attempt to control spider mites with no success.
The DE will also kill beneficial insects on your hop bines...just so ya
know. It wont harm earth worms, it will kill honey bees & lady bugs...so
keep it off flowers!

Make sure your using "food grade" DE and like said here earlier, make sure
you dont breathe the dust while your applying the DE to your plants as it
will damage your lungs.

DE also has many trace minerals and loads of silica to enrich your garden
soil and produce a healthier plant/fruit for you to consume.

Simply do an internet search on DE and plan on spending a week reading on
all the uses,and mind blowing results folks get from it...enjoy!

Steve in KC
Highwater Brewhaus

- --
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

------------------------------

Date: Sat, 07 Feb 2009 17:42:02 -0600
From: Stephen Jorgensen <stephen at ultraemail.net>
Subject: RE: Leftovers beer

I make an Anything Lying Around brew once or twice a year, incorporating
several sources of fermentables. In addition to spare small quantities
of specialty malts I also have used many other leftovers such as: cooked
breakfast cereals, rice from Chinese take-out, cooked Quinoa, that
lonely potato in the back of the crisper drawer, stale dried fruits, the
last inch of crystallized honey in the Bear, failed attempts at rustic
home-baked bread (yeast + flour + water + salt recipes only. No oils or
fats), the acorn squash I intended to roast for Thanksgiving dinner but
forgot, essentially everything in the kitchen which is likely to contain
lots of starch or sugar and very little else.

I have not yet had one I would consider undrinkable and often things
turn out quite good. I follow a few general rules: No added fats of
any kind are allowed (oatmeal left in the pan, GO. oatmeal left in a
bowl with cream or butter, NO GO.) And starchy adjuncts are kept to a
maximum of around 15% of the mash by dry weight. In the case of cooked
starches or raw fruits/vegetables I guesstimate that there is a rough
equivalency to malt by volume.

In the end I always get beer. The use of several kinds of hops and
specialty grains makes for good fun trying to pick out distinct flavors
from each ingredient. Occasionally I discover a subtle note from the
adjuncts I really enjoy. Dried figs complimented a porter-esque effort
nicely. Basmati rice added a pleasant aroma to a pale-aley brew.

Anyway, go for it! There's not much to lose. Take notes and let us know
how it turns out.


------------------------------
End of HOMEBREW Digest #5498, 02/08/09
*************************************
-------

Friday, February 6, 2009

Homebrew Digest #5497 (February 06, 2009)

HOMEBREW Digest #5497 Fri 06 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:

Sponsor The Home Brew Digest!
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Support those who support you! Visit our sponsor's site!
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DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
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FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to:

HBD Server Fund
PO Box 871309
Canton Township, MI 48187-6309

or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************


Contents:
Thermometer calibration (Jason Gazeley)
Vittles Vault Size ("A. J. deLange")
Leftovers beer ("Jerry \"Beaver\" Pelt")
Diatomaceous Earth (Greg Brewer)


* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
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----------------------------------------------------------------------


Date: Thu, 5 Feb 2009 21:28:52 -0700
From: Jason Gazeley <jason.gazeley at gmail.com>
Subject: Thermometer calibration

How should I calibrate my mash thermometers. I use two. One in the tun and
one on the return of my HERMS. I was using a 12" glass thermometer that
I got from MoreBeer! to calibrate all of my thermometers until I checked it
last week and discovered it was right on in ice water but 8 deg f low
at boiling.
I scaled this error to my 150f mash temp and realized I was mashing at 156f.
No wonder my beers always finish high. So what methods and devices does
the rest of the HBD community use?

Cheers,

Jason


------------------------------

Date: Fri, 06 Feb 2009 05:05:06 +0000
From: "A. J. deLange" <ajdel at mac.com>
Subject: Vittles Vault Size

Vittles Vaults come in several sizes. I'm across the pond right now so
I can't go look at the things but according to the website of a
retailer I looked at it's the second largest which they call "50
pounds" (the largest is 80) which holds 55 pounds of malt with
appreciable (perhaps 1/3) head room. From this we conclude that malt
is denser than dog food and that the 80 pounder would probably hold 2
sacks of malt.

A.J.


------------------------------

Date: Fri, 6 Feb 2009 07:13:05 -0800 (PST)
From: "Jerry \"Beaver\" Pelt" <beaverplt at yahoo.com>
Subject: Leftovers beer

I'm sure we've all been there. Over the course of few
batches, we've collected a few surplus ingredients.
Maybe a couple pounds of 3 or four different grains.
A couple different types of hops in the fridge. Has anyone
ever cleaned out their beer cupboard by just using all your
leftovers to make a brew? If so, what was the result? I'm in that
situation where I have a little of a lot of ingredients.
This seems like a fun thing to try.



------------------------------

Date: Fri, 6 Feb 2009 17:26:15 -0600
From: Greg Brewer <gbrewer1 at gmail.com>
Subject: Diatomaceous Earth

Any thoughts about using diatomaceous earth for controlling spider
mites on hops? Since they don't fly, I was thinking I could apply DE
to the ground surrounding my hops, and maybe it would be an effective
control. Mites have absolutely destroyed my harvests for the past few
years, and I have yet to find anything that will control them
effectively. Once established, it is too late, they hide in their
webbing on the underside of the leaves, and only a few need to survive
to re-establish themselves. I will probably try DE in any case, but
wondered if anyone else has had success.

Cheers,

Greg in Chicago


------------------------------
End of HOMEBREW Digest #5497, 02/06/09
*************************************
-------

Thursday, February 5, 2009

Homebrew Digest #5496 (February 05, 2009)

HOMEBREW Digest #5496 Thu 05 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


***************************************************************
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********** Also visit http://hbd.org/hbdsponsors.html *********

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501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to:

HBD Server Fund
PO Box 871309
Canton Township, MI 48187-6309

or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************


Contents:
RE: Walk In Cooler advice (bill keiser)
Vittles Vaults (Paul Hethmon)


* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* The HBD Logo Store is now open! *
* http://www.hbd.org/store.html *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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cannot be reproduced by any means for sale or profit.

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JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
and Spencer Thomas


----------------------------------------------------------------------


Date: Thu, 05 Feb 2009 09:32:20 -0500
From: bill keiser <bk2 at sharpstick.org>
Subject: RE: Walk In Cooler advice

greenhouse thermostats should be a simple way to control an AC unit:
http://littlegreenhouse.com/accessory/controls.shtml
if you are cooling in a range that's above freezing and use a
circulation fan, there shouldn't be an icing problem.
i've thought about using either a small AC unit or a small refrigerator
with the door removed and fastened to the cooling chamber at the doorway.
bill keiser

> It's primarily aimed at farmers who need to quickly chill harvested produce
> and flowers to extend shelf life, but seems like it would work great for a
> brewing application:
>
> http://www.storeitcold.com/index.php
>
> They have some good advice on the walk-in room itself, as well as advice on
> which air conditioner brand to buy (they say LG, because it doesn't shut
> down when the outside air temp gets low, and doesn't need to be reset in the
> morning). It's a bit spendy, but worth it, I think.
>

------------------------------

Date: Thu, 5 Feb 2009 16:48:46 -0500
From: Paul Hethmon <phethmon at hethmon.com>
Subject: Vittles Vaults

> * * * * * * * * * * * * * * * * * *
>
> For storage of grain you just can't (IMO) beat Vittles Vaults (Gamma
> Plastics). These are small drums that nicely hold a 55 Lb sack of malt
> and seal it in with an O-ring equipped screw-in lid. Moisture and
> insects are neatly excluded. I've mashed grain I had stored in one for
> 5 years. I sure determined rats would be able to chew through but,
> thank the powers above, I don't have those in my basement.
>
A.J. -- What size are you using for 55lbs? Is that their 13 gallon size?

thanks,

Paul


------------------------------
End of HOMEBREW Digest #5496, 02/05/09
*************************************
-------

Wednesday, February 4, 2009

Homebrew Digest #5495 (February 04, 2009)

HOMEBREW Digest #5495 Wed 04 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:

Sponsor The Home Brew Digest!
Visit http://www.hbd.org/sponsorhbd.shtml to learn how

Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********

DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to:

HBD Server Fund
PO Box 871309
Canton Township, MI 48187-6309

or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************


Contents:
Re: Walk In Cooler (Dick Adams)
Walkins/Bugs ("A. J. deLange")
RE: Walk In Cooler advice ("Mike Sharp")
Re: Diatomaceous Earth for Bug control ("David Houseman")


* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* The HBD Logo Store is now open! *
* http://www.hbd.org/store.html *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Send articles for __publication_only__ to post@hbd.org

If your e-mail account is being deleted, please unsubscribe first!!

To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
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HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.

LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.

The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.

More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.

JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
and Spencer Thomas


----------------------------------------------------------------------


Date: Wed, 4 Feb 2009 00:14:30 -0500 (EST)
From: rdadams at panix.com (Dick Adams)
Subject: Re: Walk In Cooler

"Susan Ruud" <susan.ruud at ndsu.edu> wrote:

> Hi, I am sure there are a ton of engineer/do it yourselfers
> out there and I could really use advice. My husband promised
> a walk in cooler and has been watching auctions, etc. for one
> at a reasonable price and has now decided it will be more
> economical to just buy the cooling system and build his own.
> If anyone has plans for building a cooler, good suggestions on
> things to do/not do, best location for parts, etc. I would
> really appreciate the help.

My powers of persuasion with my childbride can always use
new ideas. So I'd really like to know how you pulled off
this promise.

My experience with second-hand refrigerators and freezers
has led me to the conclusion that even "free" can be too much.
So DIY is a good idea.

Building it will not be complex or expensive. Getting the
correct size cooling system at a good price will be the
most difficult part.

Here are some things I found on a simple search:
http://www.homebrewtalk.com/wiki/index.php/Walk-in_Cooler
http://www.brewrats.org/walkin.cfm
http://www.cps.gov.on.ca/english/fv6000/fv6319.htm

Dick
- --
Richard D. Adams, CPA (retired)
Moderator: misc.taxes.moderated


------------------------------

Date: Wed, 04 Feb 2009 05:24:29 +0000
From: "A. J. deLange" <ajdel at mac.com>
Subject: Walkins/Bugs

The most expensive part of a walk-in is the refrigeration "split
pack" (compressor unit outside, fan coil unit inside). The walls are
just foam between galvanized sheets of steel or aluminum. They are
designed to fit together as modular pieces and it is thus possible to
configure one in all sorts of sizes and shapes. As restaurants and
bars go out of business all the time (and right now the rates must be
unusually high, used walk-ins should be readily available. If you live
in or near a metropolitan area there is probably a dealer in used
restaurant equipment. Such a dealer should have an ample selection of
used walk in bits. I would seriously consider getting a new split pack
but there are no moving parts to wear in the wall/floor/ceiling panels
and used they shouldn't be too expensive. New systems aren't that out
of sight either. Check Rapids Wholesale.

* * * * * * * * * * * * * * * * * *

For storage of grain you just can't (IMO) beat Vittles Vaults (Gamma
Plastics). These are small drums that nicely hold a 55 Lb sack of malt
and seal it in with an O-ring equipped screw-in lid. Moisture and
insects are neatly excluded. I've mashed grain I had stored in one for
5 years. I sure determined rats would be able to chew through but,
thank the powers above, I don't have those in my basement.

A.J.


------------------------------

Date: Tue, 3 Feb 2009 23:35:01 -0800
From: "Mike Sharp" <rdcpro at hotmail.com>
Subject: RE: Walk In Cooler advice

Susan Ruud asks about Walk In Cooler advice

"If anyone has plans for building a cooler, good suggestions on things to
do/not do, best location for parts, etc. I would really appreciate the
help."

Building the box is pretty easy; coming up with a reliable means of chilling
is a bit harder. The problem is many air conditioning units will ice up if
you try to cool the room too cold. I recently ran across this very clever
device that will allow you to use a conventional air conditioner as the
chilling unit for a walk-in cooler without the problem of icing up.

The way it works is that it heats up the thermostat sensor on the air
conditioner, fooling it into running until the coolbot setpoint is reached.
Then it's tiny heater shuts off, and the air conditioner thermostat senses
the cold temperature, and shuts off. The coolbot also senses the when the
A/C is icing up, and shuts off as well. The essential part is that you'll
get as much cooling capacity as you can from your air conditioner, and it
will shut off when it can't do any more (rather than continue to run if you
simply bypassed the thermostat).

It's primarily aimed at farmers who need to quickly chill harvested produce
and flowers to extend shelf life, but seems like it would work great for a
brewing application:

http://www.storeitcold.com/index.php

They have some good advice on the walk-in room itself, as well as advice on
which air conditioner brand to buy (they say LG, because it doesn't shut
down when the outside air temp gets low, and doesn't need to be reset in the
morning). It's a bit spendy, but worth it, I think.

Regards,
Mike Sharp

Kent, WA
[1891.3, 294deg] AR

------------------------------

Date: Wed, 04 Feb 2009 07:21:59 -0500
From: "David Houseman" <david.houseman at verizon.net>
Subject: Re: Diatomaceous Earth for Bug control

To those working with DE: Take care with this material. Read the health
warnings. This is not to be breathed. One should wear a good quality
mask (not a cheap painters mask) when working with DE. The sharp edges
damage lungs similar to asbestos. It's serious stuff.

BTW I tried to make a home version of a DE filter with limited success. I
need to spend more time on the design to get the right surface area to DE
volume so that it will filter in a reasonable time. Why use DE? Well it
is literally as cheap as dirt. If I get back to this project, I'll provide
an update.

Dave Houseman

------------------------------
End of HOMEBREW Digest #5495, 02/04/09
*************************************
-------

Tuesday, February 3, 2009

Homebrew Digest #5494 (February 03, 2009)

HOMEBREW Digest #5494 Tue 03 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


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Contents:
Walk In Cooler ("Susan Ruud")
Re: Diatomaceous Earth for Bug control ("Craig S. Cottingham")


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----------------------------------------------------------------------


Date: Tue, 3 Feb 2009 08:58:42 -0600
From: "Susan Ruud" <susan.ruud at ndsu.edu>
Subject: Walk In Cooler

Hi, I am sure there are a ton of engineer/do it yourselfers out there and I
could really use advice. My husband promised a walk in cooler and has been
watching auctions, etc. for one at a reasonable price and has now decided it
will be more economical to just buy the cooling system and build his own.
If anyone has plans for building a cooler, good suggestions on things to
do/not do, best location for parts, etc. I would really appreciate the
help.

Thanks,
Susan Ruud


------------------------------

Date: Tue, 3 Feb 2009 09:33:34 -0600
From: "Craig S. Cottingham" <craig.cottingham at gmail.com>
Subject: Re: Diatomaceous Earth for Bug control

On Feb 2, 2009, at 11:36, slaycock at discoverynet.com wrote:

> All that said, can I safely add [Diatomaceous Earth] to my barley
> grain and even Bulk DME
> stock for bug control WITHOUT harming the health of my yeast during
> fermentation?

Setting aside for the moment that there are probably more effective
ways to control infestation in your malt products (see below), I
suspect that diatomaceous earth will have little effect on the
*health* of your yeast. I couldn't find any details on the average
particle size in DE, but since they're the silica exoskeletons of a
variety of algae, I would guess that they're in the same ballpark as
yeast cells. Between that and the fact that both DE and yeast are in
relatively low concentration in your beer, I don't think you'll have
to worry about DE particles tearing up your yeast cells.

That being said....

One of DE's properties is that it absorbs lipids, which makes it
effective both as an ingredient in facial masks and insecticides. I
would not be surprised if DE binds to the lipids in yeast cell walls,
causing them to flocculate out in a manner similar to bentonite. In
other words, your yeast may remain healthy, but they're all sitting
on the bottom of the fermenter where they can't do as much good.

If your primary concern is keeping insect infestation at bay, few
things work as well as carbon dioxide. Put a small chunk of dry ice
in the bottom of a reasonably gastight container (a plastic bucket
should be fine; a brown paper grocery sack not so much) and pour your
malt or DME on top. The CO2 will displace the oxygen, leaving an
environment that's inhospitable to insects.

- --
Craig S. Cottingham
BJCP Certified judge from Olathe, KS ([621, 251.1deg] Apparent
Rennerian)
craig.cottingham at gmail.com
+1 (913) 826-6896 or Skype me at CraigCottingham

------------------------------
End of HOMEBREW Digest #5494, 02/03/09
*************************************
-------

Monday, February 2, 2009

Homebrew Digest #5493 (February 02, 2009)

HOMEBREW Digest #5493 Mon 02 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


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or by paypal to address serverfund@hbd.org. DONATIONS of $250
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***************************************************************


Contents:
Re: Aluminum kettle (John & Joy Vaughn)
Osiris HBC Results posted (Dion Hollenbeck)
Diatomacious Earth for Bug control (slaycock)
How Much Alkalinity ("A. J. deLange")


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and Spencer Thomas


----------------------------------------------------------------------


Date: Sun, 01 Feb 2009 22:29:22 -0900
From: John & Joy Vaughn <hogbrew at mtaonline.net>
Subject: Re: Aluminum kettle

Fred,

As long as he has removed all of the oil from the surface of the kettle,
it will work great as a boil kettle.

John Vaughn
Wasilla. Alaska

> Date: Sat, 31 Jan 2009 18:55:12 +0000 (UTC)
> From: Fred Scheer <fredscheer07 at comcast.net>
> Subject: Aluminum kettle
>
> HI:
>
> A friend of mine got some time ago one of
> this Turkey Fryers, 30 qt, Aluminum.
> Now, he made fish fry in there three times.
> He cleaned it very well, I can't see any
> spots in the kettle.
> I have no experience in homebrewing in Aluminum
> kettles. Any advise is appreciated?
>
> Cheers,
>
> Fred
>
>
>
>


------------------------------

Date: Mon, 02 Feb 2009 09:30:16 -0700
From: Dion Hollenbeck <hollen at woodsprite.com>
Subject: Osiris HBC Results posted

For the complete results to the Osiris Homebrew Competition sponsored
by SKA Brewing in Durango, CO., please go to:

http://hstrial-cmorrow8.homestead.com/

and click on the "Awards" link.

Congratulations to Chris Vest who won BOS and will have his beer
brewed and entered by SKA in the GABF Pro/AM Competition this year.

dion

- --
Dion Hollenbeck
Email: hollen at woodsprite.com Home Page: http://www.woodsprite.com
Brewing Page: http://hbd.org/hollen Toys: 98 4Runner, 86 4x4 PU

------------------------------

Date: Mon, 2 Feb 2009 11:36:31 -0600 (CST)
From: slaycock at discoverynet.com
Subject: Diatomacious Earth for Bug control

Greetings,
I have been researching the uses of Diatomacious Earth lately for personal
health benefits.
Already knowing that it is amazing as a natural "food grade" bug killer.
(I hesitate calling it an insecticide, because it isn't a poison but the
microscopic diatoms sharp edges simply cuts the insects/parasites as they
land/walk on the DE or ingest it and they dehydrate or "bleed out" if you
will, and die. It's much like what would happen if we walked & rolled
around on sharp knife blades...not a pleasant thought!)

All that said, can I safely add this to my barley grain and even Bulk DME
stock for bug control WITHOUT harming the health of my yeast during
fermentation?

Keep in mind that DE used for Pool filtering IS NOT FOR HUMAN CONSUMPTION!!
If you use DE, it MUST BE MARKED "Food Grade or Codex Food Grade"

Thanks for any feedback!
Steve in KC
Highwater Brewhaus


- --
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

------------------------------

Date: Mon, 02 Feb 2009 18:59:59 +0000
From: "A. J. deLange" <ajdel at mac.com>
Subject: How Much Alkalinity

Kai and I have been discussing this off line. In summary for those who
may be interested:

It would be well to start with the definition of alkalinity: the
amount of acid required to move the pH of a water sample from whatever
it is to pH 4.3 (which is a somewhat arbitrary, in the sense that 4.2
or 4.4 would serve just as well, number but the one usually accepted
in brewing).

If one puts 100 mg (1 mMol) of chalk in a beaker and adds water to
make up a to a little less than a liter and then begins to add a
strong acid (i.e. one whose highest pK is at least 2 units less than
4.3) until pH 4.3 is reached he will have to add 2.05 mEq of acid.
The first mEq goes to convert the carbonate to bicarbonate: CO3-- + H
+ --> HCO3- and the second to convert all the bicarbonate to
carbonic (actually at pH 4.3 not quite all but certainly most will
convert): HCO3- + H+ --> H2CO3. The .05 is needed just to establish
the H+ ion concentration of 10^(-4.3) mol/L required for a pH of 4.3
so that even completely deionized water has an alkalinity of .05 mEq/
L or 2.5 ppm as CaCO3 when 4.3 is the defining pH. As 2.05 mEq of acid
total have been used in reaching pH 4.3 the alkalinity of this sample
is 2.05 mEq/L or 102.5 ppm as CaCO3 (multtiply by 50).

If one adds the acid incrementally the pH will decrease from a value
around 10 to 4.3 as the acid is added. Let r1 = 10^(pH-6.38) be the
ratio of bicarbonate to carbonic and r2 = 10^(pH - 10.38) be the ratio
of carbonate to bicarbonate ion concentration. Then f1 = 1/(1 + r1 +
r1*r2) is the fraction of total carb species which are carbonic, f2 =
r1*f1 is the fraction which is bicarbonate and f3 = r2*f2 = r1*r2*f1
is the fraction which is carbonate. The amount of acid consumed in
going to a particular pH from solid calcium carbonate is the increase
in carbonic plus the decrease in carbonate. If starting with chalk
(f1 = 0, f3 =1.0 and 100 mg = 1 mMol) so the amount of acid required
is (1)*(f1 + 1 - f3). Thus at pH 4.3 where f1 is approximately 1 and
f3 approximately 0 the acid required is approximately 2 mEq as above.
In this simple calculation we are ignoring the 0.05mEq for the pH
value itself. At pH 8.3, by contrast, f1 and f3 are each about 1% and
f2 about 98% so the acid required is approximately (1)(.01 + .99) or
about 1 mEq/L. To take this sample the rest of the way to pH 4.3 would
thus require another mEq (plus the .05) and the alkalinity of this
sample, prepared by putting 100 mg of CaCO3 into a bit less than 1L of
water, adding acid to pH 8.3 and adding water to make up to exactly 1L
would be 1.05 mEq or 52.5 ppm as CaCO3. If I added enough acid (1.19
mEq) to get the sample to pH 7 where 19% of CO3-- has converted to
carbonic and 81 to bicarbonate and you sent the sample off to a lab
they would come back with a report of about 2.05 - 1.19 = 0.86 mEq/L
or 43 ppm as CaCO3. To reach pH 6 would require 1.71 mEq of acid and
the alkalinity would then be about 0.34 mEq/L or 17 ppm as CaCO3. Thus
the alkalinity is about half the number of mg/L CaCO3 added at pH 8.3
and drops rapidly as the pH of the prepared sample is made lower.

Now things are different if a weak (at least one pK close to the
working values of pH of interest) acid, in particular carbonic, is
used to supply the protons. The reaction is

CO3-- + H2CO3 --> 2HCO3-

Here a carbonic molecule has given up a proton becoming a bicarbonate
ion. The proton is immediately taken up by a carbonate ion which
becomes a bicarbonate ion. At pH 8.3 again 98% of the added carbonate
has been converted to bicarbonate but now for each bicarbonate from
the added chalk there is a second from the acid which supplied the
proton to convert it. It should be clear that the alkalinity will, in
this case, be double what it was when strong acid was used and it is
at about 101.9. But at lower pH as more protons are required more
carbon dioxide must dissolve to supply them and this increases the
alkalinity above what it would be were strong acid (hydrochloric,
sulfuric) used. At pH 6 1.71 mEq of protons are still needed but as
only 29% of carbonic converts to bicarbonate one requires 5.82 mMol of
carbon dioxide tot be dissolved. As one bicarbonate is produced for
each proton there will thus be 1.71 mMol of bicarbonate from carbonic.
Of the 1 mMol of added carbonate 29% is converted to bicarbonate as
well and there is thus a total of 2.00 mMol of bicarb which will
require 2 mEq of acid to convert totally to carbonic (near pH 4.3) and
the alkalinity of this water is thus 2 mEq/L or about 100 ppm as
CaCO3. Thus if the CaCO3 is dissolved with carbonic acid, which is
nature's way (surface water, limestone caves etc.) The alkalinity will
be about 1 part per million "as CaCO3" for each mg/L CaCO3 dissolved
and it is relatively insensitive to pH as long as you stay above pH 6
(at pH 5 the alkalinity drops to 0.82ppm/mg/L and it takes 1.4
atmospheres of CO2 to get enough to dissolve). That's why we use "as
CaCO3 units (though I really prefer mVal/mEq because they don't lead
to the kind of confusion we often see over this very point).

The bottom line here is that if you are doing calculations concerning
calcium carbonate additions to brewing water you MUST consider the pH
of the water you are formulating and the means that will be used to
dissolve the calcium carbonate. Any spreadsheet, brewing software,
etc. that does not ask about both of these things has the potential to
lead you astray.

All the calculations alluded to above were done with the spreadsheet I
developed for a class last fall which is available at
http://www.wetnewf.org/Brewing_articles/BURP_OCT08
and which, as a consequence of my correspondence with Kai I have
updated to fix a couple of minor things, added fields which show
saturation WRT carbon dioxide and calcium carbonate (this can be an
issue - water in equilibrium with air and calcite can only dissolve 55
mg/L) and appreciably augmented the instructions. It is probably
pretty intimidating but it does cover most aspects of brewing water
chemistry.

A.J.


------------------------------
End of HOMEBREW Digest #5493, 02/02/09
*************************************
-------

Sunday, February 1, 2009

Homebrew Digest #5492 (February 01, 2009)

HOMEBREW Digest #5492 Sun 01 February 2009


FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org


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FAQ at http://hbd.org for details of this status). Donations
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or by paypal to address serverfund@hbd.org. DONATIONS of $250
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amount are considered paid advertisement, and may be deductible
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***************************************************************


Contents:
sugar ("Bill & Sara Frazier")
Aluminum kettle (Fred Scheer)
How much increase in alkalinity as CaCO3 should 1ppm CaCO3 cause ? (Kai Troester)
Sugars ("A. J. deLange")
11th Annual UKG Drunk Monk Challenge (John Kleczewski)


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JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
and Spencer Thomas


----------------------------------------------------------------------


Date: Mon, 26 Jan 2009 00:14:19 -0600
From: "Bill & Sara Frazier" <bsfrazier at att.net>
Subject: sugar

A desire for sugar syrups for use in beer has been mentioned the last few
days. I noticed on the More Beer and Northern Brewer web sites Belgian
sugar syrups for sale...evidently new products for the home brewer.
However, the syrups are currently out-of-stock. These may be interesting to
use instead of plain table sugar.

Bill Frazier
Olathe, Kansas USA

------------------------------

Date: Sat, 31 Jan 2009 18:55:12 +0000 (UTC)
From: Fred Scheer <fredscheer07 at comcast.net>
Subject: Aluminum kettle

HI:

A friend of mine got some time ago one of
this Turkey Fryers, 30 qt, Aluminum.
Now, he made fish fry in there three times.
He cleaned it very well, I can't see any
spots in the kettle.
I have no experience in homebrewing in Aluminum
kettles. Any advise is appreciated?

Cheers,

Fred


------------------------------

Date: Sat, 31 Jan 2009 18:44:31 -0500
From: Kai Troester <kai at braukaiser.com>
Subject: How much increase in alkalinity as CaCO3 should 1ppm CaCO3 cause ?

A few weeks back I decided to write another brewing water calculation
spread sheet. The formulas were mostly taken from the literature and
existing spread sheets. Then I decided to add a cation (positively
charged ions) to anion (negatively charged ions) balance check just to
see if the water profile that I created made sense. This is when I
noticed an imbalance when creating brewing water from scratch by using
distilled water and salts. The resulting water should not show an
imbalance and every cation should have matching anion. But it was
showing an imbalance when chalk was used. So I gave the fomulas used
for chalk a closer look.

And found that 1 mol (a unit that is proportional to the amount of
molecules/ions of a particular substance) of CaCO3 was assumed to add
one mol of bicarbonate to the water. And that in most spreadsheets and
calculators the bicarbonate contribution was later used to calculate
the alkalinity as CaCO3. But that didn't seem right. If CaCO3 adds
only one bicarbonate, it also needs to add one hydroxyl ion (OH-):

(1) CaCO3 + H20 -> Ca2+ + HCO3- + OH-

Since this would liberate hydroxyl the pH of the water would need to
rise. If that is not happening then chalk can also be dissolved in the
presence of CO2

(2) CaCO3 + H2O + CO2 -> Ca2+ + HCO3- + HCO3-

In this case each mol of chalk would add 2 moles of bicarbonate. Yet
another reaction is possible in the presence of acid and free protons

(3) CaCO3 + H+ -> Ca2+ + HCO-

(4) HCO- + H+ -> H2O + CO2

If neither of these reactions hapen the chalk won't dissolve. And that
is clearly happening in brewing: If you add chalk to the brewing water
it just turns the water cloudy and it will eventually settle.

But does it really matter if the chalk dissolves or not? No. Because
the bigger picture is that we added the chalk to give the water+chalk
mixture more "alkalinity" I.e. acid buffering capacity. That acid
buffering capacity is needed to reach a targeted mash pH once the
malt, and with it acid buffers, has been added. At that point
reactions (3) and (4) can take place. Whichever reaction is happening
(1)..(4), chalk can neutralize 2 equivalents of acid and for all
intents and purposes 1 ppm of chalk should therefore raise the
alkalinity by 1 ppm as CaCO3.

But that is not what most water treatment spreadsheets assume. They
assume that 1 mmol/l CaCO3 adds 1 mmol/l HCO3- (bicarbonate) which
drops one negative charge on the floor and caused the imbalance that I
noticed. And then they go ahead and convert the ppm HCO3- to
alkalinity as ppm CaCO3 by multiplying with the factor 50/60. In the
end the addition of 1 ppm CaCO3 raises the alkalinity by only 0.5 ppm
as CaCO3. This certainly seems wrong and I thought I had it all
figured out until I decided to confirm this theory with an experiment.

The experiment is seemingly simple. Make small mashes with 3 different
waters that are supposed to have the same residual alkalinity and test
their pH. The first water (A) would be reverse osmosis water and serve
as the control. The second water (B) would be reverse osmosis water
with chalk and calcium chloride added such that the added residual
alkalinity is 0 if the chalk contributes 2 alkalinity equivalents. The
3rd water (C) has chalk and calcium chloride added such that the added
residual alkalinity is 0 if chalk contributes only one alkalinity
equivalent. Whichever water that causes a mash pH to match the RO
water mash pH the closest would have used the correct formula for
alkalinity contributions by chalk. Here is a summary of the waters used:

* water A: reverse osmosis tap water
* water B: RO water + 80 ppm CaCO3 + 290 ppm CaCl2*2H2O; this
increases the Ca2+ content by ~110 ppm
o if 1ppm CaCO3 adds 1 ppm alkalinity as CaCO3 then the
water's residual alkalinity (RA) increases by 0.0 over the RO water's RA
o if 1 ppm CaCO3 adds 0.5 ppm alkalinity as CaCO3 then the
water's RA decreases by 2.2 dH (German Hardness) or 40 ppm as CaCO3
* water C: RO water + 150 ppm CaCO3 + 150 ppm CaCl2*2H2O; this
increases the Ca2+ content by ~110 ppm
o if 1ppm CaCO3 adds 1 ppm alkalinity as CaCO3 then the
water's residual alkalinity (RA) decreases by ~4.4 dH or 80 ppm as CaCO3
o if 1 ppm CaCO3 adds 0.5 ppm alkalinity as CaCO3 then the
water's RA remains unchanged compared to the RO water

200ml of each water were taken and heated to ~64C in the microwave.
Then 50g of crushed pilsner malt were added to each water sample and
stirred in. The mashes were occasionally stirred and a 15ml sample was
taken from each mash after 5 min and cooled to 22C when it was
measured with a pH meter. The results were surprising:

* mash A : pH = 5.76
* mash B : pH = 5.69
* mash C : pH = 5.77

According to these results the chalk added only 0.5 ppm alkalinity as
CaCO3. And the pH shift for mash B is even in the range that would
have been expected from the 2.2 dH RA drop. According to Kolbach the
shift is 0.03 pH units for each dH which would be 0.066 and the
results show ~0.07.

I couldn't believe it and started to ponder why that would be the
case. Why is the added CaCO3 only neutralizing 1 equivalent of acid
and not 2? Maybe it has something to do with the chalk not being
dissolved.

So I conducted another similar experiment. This time between a
control, water with suspended chalk and water with dissolved chalk.
The chalk would be dissolved with CO2 which is brought into solution
through shaking. Here is what I did. I added 0.24 g chalk and 0.88g
calcium chloride to 1.5 l of reverse osmosis water. This is twice the
salts added to water B in the previous experiment because I wanted to
pronounce the effect of the residual alkalinity difference. I then
shook this water and the added salts in a 2l soda bottle until the
calcium chloride was dissolved. Immediately after shaking, without
giving the chalk a chance to settle, I poured off 200ml for sample B.
I then removed another 300ml in order to increase the head space. This
headspace was then filled with CO2 and the bottle closed. When I
started shaking the bottle, it immediately contracted which was a sign
of the CO2 going into solution. After some shaking I let the bottle
sit until the water became crystal clear again. This was not the
result of the chalk settling but it being dissolved in the water. I
then took 200ml of that water for samle C:

* water A: reverse osmosis
* water B: RO + 160 ppm CaCO3 + 580 ppm CaCl2*2H2O
o RA = -4.4 dH or 80 ppm alkalinity as CaCO3 if chalk adds
1 alkalinity equivalent
o RA = 0 dH or 0 ppm alkalinity as CaCO3 if chalk adds 2
alkalinity equivalents
* water C: water B + CO2
o RA = -4.4 dH or 80 ppm alkalinity as CaCO3 if chalk adds
1 alkalinity equivalent
o RA = 0 dH or 0 ppm alkalinity as CaCO3 if chalk adds 2
alkalinity equivalents

I then heated both samples to 68C, added 50g crushed pilsner malt to
each and rested (with occasional stirring) them for 10 min. After that
I took 15 ml samples and cooled them to 20-21C:

* mash A : pH = 5.67
* mash B : pH = 5.47
* mash C : pH = 5.66

So it appears that dissolving the chalk in the mash water changes its
alkalinity potential. undissolved chalk has less alkalinity potential
than dissolved chalk since mash B showed a much lower mash pH which
could only have been the result of a lower RA than the 2 other mashes.

But why is this? Does not all the chalk dissolve in the mash as
commonly assumed? And if yes why is that? And would it always be 50%?
Shouldn't there be enough acid for this to happen via reactions (3)
and (4)?

------------------------------

Date: Sun, 01 Feb 2009 09:37:56 +0000
From: "A. J. deLange" <ajdel at mac.com>
Subject: Sugars

Despite having retired I find myself sitting on the patio of a hotel
in Mauritius which is a big cane sugar producer and when the waiter
put the sugar bowl with "Dry Demerrara Sugar" and "Raw Sugar" in front
of me I was reminded of the recent discussions. FWIW, from the
packets, "Demerara is a golden sugar with a large sparkling crystal, a
crunchy, sticky texture and a rich aroma due to the presence of the
cane molasses enrobing each crystal." and for the raw sugar "This
granulated raw sugar retains all the rich flavor and the natural
elements intrinsic to the sugar cane". They are both about the same
color but the Demerrara crystals are perhaps a little larger (1 x 0.5
x 0.5mm approx) and more regular (the raw stuff looks ground). They
taste about the same. As for their use in beer, the local brew
(Phoenix) certainly has a lot of it in it and is, IMO, pretty good
stuff.

A. J.


------------------------------

Date: Sun, 1 Feb 2009 11:05:49 -0600
From: John Kleczewski <john.kleczewski at gmail.com>
Subject: 11th Annual UKG Drunk Monk Challenge

The Urban Knaves of Grain announce that the Drunk Monk Challenge 2009
will soon be upon us! The competition is sanctioned by the American
Homebrewers Association, and is a qualifying event for MCAB and the
Midwest Homebrewer of the Year circuit.

The competition is scheduled for March 13 and 14, 2009, to be held at
Walter Payton's Roundhouse in Aurora, IL. As in previous years, the DMC
features the Menace of the Monastery, a special category consisting of
styles which are monastic in origin: Belgian Blonde, Dubbel, Tripel,
Pale, Strong Golden and Strong Dark Ales, as well as German Doppelbock.
Awards for all categories will be announced following the MOM and Best
Of Show judging. There will be 2 separate categories for BOS:
Beer and Mead/Cider. Rosette ribbons featuring our famous 'Drunk Monk'
will be awarded for 1st, 2nd and 3rd places for each category. Special
ribbons will be awarded for 2nd and 3rd BOS and MOM, and engraved plaques
will be the prizes for 1st BOS and MOM.

Of special note is that the winner of the Beer BOS will have the
opportunity to assist in the scaling up and brewing of their award-winning
recipe at Walter Payton's Roundhouse, of Aurora, IL. Please see rules
for details.

Drunk Monk Challenge entries are $7 for the first entry, and $5 each
additional entry. Menace of the Monastery entries are $5 each.

Entries will be accepted between February 28 and March 7.

There are several drop off locations in the Chicagoland area.
Entries can be shipped to:
The Drunk Monk Challenge,
c/o Walter Payton's Roundhouse - America's Brewing Company,
205 North Broadway, Aurora, IL 60505, ATTN: Mike Rybinski
NO DROP OFFS ALLOWED AT THIS LOCATION!

Full details, rules, entry forms, etc. can be found at the UKG website:

http://www.knaves.org/DMC/index.htm

Good luck and thanks!


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End of HOMEBREW Digest #5492, 02/01/09
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