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Author Topic: yeast re-use  (Read 2413 times)

Offline redzim

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yeast re-use
« on: May 08, 2013, 12:06:00 pm »
any one see a problem re-using W-34/70 from a Bo-Pils that was 1.058, to a German Pils that is going to only be around 1.050?   I ask because a couple years ago I reused US-05 from a 1.066 IPA in a 1.045 brown ale....  major off flavors etc occurred, AFAIK because of the yeast dropping in gravity so much.... I am assuming a 1.058 to 1.050 drop is not such a big deal?

-red
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Offline weithman5

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Re: yeast re-use
« Reply #1 on: May 08, 2013, 12:39:43 pm »
i don't think you will have much problem.
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Offline denny

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Re: yeast re-use
« Reply #2 on: May 08, 2013, 01:09:31 pm »
No problem.  I don't know where the idea that you always have to go up in gravity came from.
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Offline majorvices

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yeast re-use
« Reply #3 on: May 08, 2013, 01:18:21 pm »
Quote from: denny on May 08, 2013, 01:09:31 pm
No problem.  I don't know where the idea that you always have to go up in gravity came from.

I think it is simply a practice to go up in gravity and may have gotten misconstrued as a rule?
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Offline denny

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Re: yeast re-use
« Reply #4 on: May 08, 2013, 01:20:57 pm »
Quote from: majorvices on May 08, 2013, 01:18:21 pm
Quote from: denny on May 08, 2013, 01:09:31 pm
No problem.  I don't know where the idea that you always have to go up in gravity came from.

I think it is simply a practice to go up in gravity and may have gotten misconstrued as a rule?

Yeah, that's what I'd guess.
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Life begins at 60.....1.060, that is!

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Offline weithman5

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Re: yeast re-use
« Reply #5 on: May 08, 2013, 01:38:07 pm »
i have never had a problem. i seem to recall reading that there is a concern of pissing off the yeast a bit if you go from a particularly big beer  (1090ish) down. but i don't know how valid that really is.
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Offline davidgzach

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Re: yeast re-use
« Reply #6 on: May 08, 2013, 01:44:39 pm »
Quote from: majorvices on May 08, 2013, 01:18:21 pm
Quote from: denny on May 08, 2013, 01:09:31 pm
No problem.  I don't know where the idea that you always have to go up in gravity came from.

I think it is simply a practice to go up in gravity and may have gotten misconstrued as a rule?

+1. 
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Dave Zach

Offline redzim

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Re: yeast re-use
« Reply #7 on: May 08, 2013, 02:23:08 pm »
OK cool. I will brew on!
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Offline gmac

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Re: yeast re-use
« Reply #8 on: May 08, 2013, 09:24:40 pm »
Old gravity doesn't matter. Pitch the right amount for the new gravity (don't over pitch).
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Offline denny

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Re: yeast re-use
« Reply #9 on: May 09, 2013, 09:22:14 am »
Quote from: weithman5 on May 08, 2013, 01:38:07 pm
i have never had a problem. i seem to recall reading that there is a concern of pissing off the yeast a bit if you go from a particularly big beer  (1090ish) down. but i don't know how valid that really is.

I don't think I'd reuse yeast from a 1.090 beer anyway.  The ROT is not to reuse over 1.060.  Being a yeast abuser, I push that ti the low 70s.
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Offline ajk

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yeast re-use
« Reply #10 on: May 10, 2013, 06:02:14 pm »
Going up in gravity is just convenient, not a rule. Every time you ferment a beer, you end up with more yeast than you started with, and since higher-gravity beers require more yeast ...
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