FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
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Contents:
Re: Commercial Sparging (Fred L Johnson)
Pseudo Lagering ("Lance Harbison")
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Date: Wed, 19 Nov 2008 07:26:39 -0500
From: Fred L Johnson <FLJohnson52 at nc.rr.com>
Subject: Re: Commercial Sparging
Thanks to Joe and Kai for the very informative posts.
Kai's information comes from a brewery that obviously has very
consistent extraction efficiencies and very controlled processes--
something we all should strive for. Joe's process of formulating the
recipe and adjusting the run-off volume based on expected extraction
efficiency and boil-off rate and set boil time makes good sense.
Except for very large beers, I've always set my run-off volume to be
a constant relative to the grain mass and then I've added water to
the kettle to get the preboil volume to a value that will give me my
target gravity based on my historical boil-off rates. Based on what
commercial breweries are doing according to Kai and Joe, i.e., not
being very concerned about a dilute run-off, I think I'll start
collecting more run-off to match the volume I'll likely need to
exactly compensate for the boil-off rate, taking advantage of the
improved extraction efficiency that will bring. Apparently the volume
of run-off isn't really an issue if one controls the pH of the
sparge. I'll continue to make small adjustments to the kettle volume
or boil-time based on actual values achieved, but those adjustments
will be much smaller than in the past.
Fred L Johnson
Apex, North Carolina, USA
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Date: Wed, 19 Nov 2008 16:20:16 -0500
From: "Lance Harbison" <harbison65 at verizon.net>
Subject: Pseudo Lagering
I just kegged (in 4 cornies) 17 gal of Altbier. I plan on lagering each
keg, but currently only have room for 1 of the kegs in my fridge. The
remaining 3 kegs are resting in my 60F basement until space opens up. How
important is the lowering of the temperature to lagering temperature at a
rate of 1-2 degrees per day, since when space opens in the fridge any keg
will simply be plopped in? Similarly, are there any negatives to delayed
lagering?
Lance Harbison
Pittsburgh
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End of HOMEBREW Digest #5453, 11/19/08
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