repitch onto the yeast cake

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agentgonzo

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when i'm doing consecutive batches in a week, i tend to repitch directly onto the yeast cake. this then ferments like crazy as there is so much yeast at the start of primary fermentation, so it's generally finished fermenting in 3 days or so.

is there anything bad about this short primary fermentation stage? should i remove part of the yeast cake prior to repitching?
 
There are lot of threads on this already. Yes, it is perfectly acceptable to pitch on an existing cake. There can be problems with infection and petite mutation with repeated re-pitching on a cake. Yes, fermentation is much faster and that is not a bad thing as long as you can keep the beer in the fermenter and the temp stays where it should be.
 
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