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Old 01-23-2013, 05:31 AM   #1
orangemen5
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Sep 2012
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I was wondering how long a yeast cake can sit before repitching won't work? I brewed an ESB with a OG of 1.055 with S-04. I like to let my beers sit in primary for 4-6 weeks. Is there a time frame will the yeast sit to long and won't awaken. I'd like to repitch a big imperial stout on this cake. But let the esb sit for a month first

 
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Old 01-23-2013, 12:30 PM   #2
freisste
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Ann Arbor, Michigan
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I don't have hard evidence or information, but I do have a bit of anecdotal information for you.

I just did this a few weeks ago. Had an APA sit for at least a month (I think, I will check my notes but I just got to work) and pitched an 1.108 OG stout onto it. I did pitch the same day I racked the APA out of the bucket. Fermentation was very fast even though I cooled the stout below its fermentation temp range and barely hit the bottom if the acceptable range. Use a blowoff tube. I didn't end up needing one, but I saw a video from a guy on here who did a time lapse video and it was in the blowoff tube in around 2 hours, if I remember correctly.

 
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Old 01-23-2013, 12:35 PM   #3
Varmintman
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idaho falls, idaho
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The only reason I use a secondary is so that I can reuse the yeast cake. I do not have any proof but it seems to me that if I can get the yeast harvested and in the fridge sooner I will have a better or more viable yeast to start my next batch with.

But I honestly do not know if I am making more work for myself

 
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Old 01-23-2013, 12:42 PM   #4
freisste
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Sorry, I thought you were asking how long a beer can sit on a yeast cake before you remove it and pitch another beer DIRECTLY onto it. As in, you leave the entire yeast cake in the bottom of the bucket; finished beer off, new wort on.

Sorry about that.

 
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Old 01-23-2013, 03:19 PM   #5
orangemen5
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Sep 2012
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Quote:
Originally Posted by freisste
Sorry, I thought you were asking how long a beer can sit on a yeast cake before you remove it and pitch another beer DIRECTLY onto it. As in, you leave the entire yeast cake in the bottom of the bucket; finished beer off, new wort on.

Sorry about that.
That's exactly what I'm asking. If my beer sits in my primary for say a month to 6 weeks. Rack off beer to secondary. Repitch new wort on top. The yeast won't have any problem re starting after being dormant for so long ?

 
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Old 01-23-2013, 03:41 PM   #6
freisste
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They won't have any problem restarting.

However, there are pros and cons to pitching on a yeast cake. I can't explain it all to you, but it shouldn't be too hard to find with a little searching.

 
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Old 01-23-2013, 03:45 PM   #7
Varmintman
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Well heck I guess I misunderstood....Sorry

 
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