Re using a yeast cake - Home Brew Forums
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Old 10-09-2012, 11:06 PM   #1
BFR
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Jun 2012
auckland, North island
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I've had a batch in the fridge for the last couple of weeks to clear and am planing on bottling it tomorrow.... can I reuse the lees? would the cold have caused the yeast to die out or will it just take some time to restart?

Obviously I will have to use new juice e.c.t.



 
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Old 10-10-2012, 12:03 AM   #2
hellpatrol
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Sep 2012
central, CT
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the yeast should wake up after coming back to room temp. yeast can be reused over and over. Guinness claims to use the original yeast they started with!



 
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Old 10-10-2012, 03:09 AM   #3
TAPPAR
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Sep 2012
Des Moines, IA
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I have done this and it definitely works, fermentation started back up within a day after getting out of the fridge and having fresh juice on it.

 
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Old 10-11-2012, 05:17 AM   #4
popnfrresh
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Oct 2010
us, ny
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What is the process to using this?

If I wanted to do a back to back cider, do I need to clean the lees out of the last batch or can I just re-add the fresh juice to the carboy?

 
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Old 10-11-2012, 12:40 PM   #5
LeBreton
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Nov 2011
Finger Lakes, NY
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If you just racked off the lees, then you can add the new juice immediately.
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Old 10-11-2012, 01:38 PM   #6
johnny5000
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Sep 2012
Fort Wayne, Indiana
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If you keep reusing the yeast, does autolysis eventually become a problem?

 
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Old 10-11-2012, 06:39 PM   #7
LeBreton
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Nov 2011
Finger Lakes, NY
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Quote:
Originally Posted by johnny5000 View Post
If you keep reusing the yeast, does autolysis eventually become a problem?
Yes, as does yeast mutation. There is a sticky somewhere in the beer forum (fermentation & yeast I think) about yeast washing which is a safe way to separate the viable yeast from the dead cells.
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Old 10-13-2012, 07:45 AM   #8
BFR
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Jun 2012
auckland, North island
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Well after racking I thought why not give it a go.... as I had 2 batches I had racked I combined the lees (bothe the same yeast from the same batch) added more juice (all my leftovers e.c.t) some more sugar a good old dollop of nutrants and air locked it.... twas away within an hour the fastest ferment I've ever had.... few days later ferment has slowed I will give it a couple more weeks and then see what my yeasty beasty is like.



 
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