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Old 06-20-2012, 08:37 PM   #1
Dec 2010
London, Ontario
Posts: 17

Before I transfer from my primary to keg I cold crash my carboy in the fridge for a week. Would I be able to just wait for my slurry to reach fermentation temp and re-pitch on top? or does the cold crash alter the viability of my yeast for re-pitching?

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Old 06-20-2012, 09:38 PM   #2
LLBeanJ's Avatar
Feb 2012
Windsor, CO
Posts: 2,784
Liked 641 Times on 472 Posts

The yeast will be fine once they warm back up. However, if you pitch directly on the whole cake, you'll be overpitching by quite a bit. You probably only need about 25% of the yeast cake for a healthy fermentation. With that said, I've personally pitched on a full yeast cake before and it made great beer, but if I were to do it again, I'd probably pull out about a quarter of the cake and pitch that.

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Old 06-20-2012, 09:40 PM   #3
Nov 2011
Fort collins, CO
Posts: 122
Liked 13 Times on 13 Posts

you should be able to use it just fine, although I would recommend removing some of it, a whole yeast cake is normally way to much yeast for a batch.

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