Author Topic: 2 questions about racking onto yeast cake  (Read 139 times)

Offline Jefferson Coastal

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2 questions about racking onto yeast cake
« on: July 14, 2020, 08:41:35 PM »
I have never done this before, however considering.   Brewed a Marzen and will be racking it off to a secondary.   The beer is being fermented in a 5 gallon glass carboy.   My next beer will be a Doppelbock

- Would it be best to siphon off as much beer (& trub) as possible, and then rack the fresh new wort on top the existing yeast cake (& any residual)

- After siphoning how long could I safely keep the yeast cake as is, before adding the new wort?   Eg 3 days, 5 days more?

Thanks for the advice.


Offline erockrph

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Re: 2 questions about racking onto yeast cake
« Reply #1 on: July 14, 2020, 09:40:27 PM »
The beer is protective for the yeast. When I do this I rack the old beer off right before racking the new beer on the cake. If I can't do it the same day, I usually transfer the yeast to a few mason jars (with a small amount of the beer) and keep them in the fridge until I can use them.

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Offline Kevin

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Re: 2 questions about racking onto yeast cake
« Reply #2 on: July 15, 2020, 02:51:54 PM »
When I do this I plan my brews so that brew #2 is ready to go on the yeast the very same day that brew #1 is being kegged. If there is going to be any delay of a day or more I collect the yeast cake in a quart mason jar and store it in the refrigerator. I have kept jars for three or more weeks like this before using with no problems.
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Offline tommymorris

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Re: 2 questions about racking onto yeast cake
« Reply #3 on: July 15, 2020, 03:19:35 PM »
When you do this do you worry about the ring of Brown hop matter stuck to the side of the fermenter? Batch two will naturally submerge that stuff and I hear it is pretty bitter. No negative side effects?

Offline denny

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Re: 2 questions about racking onto yeast cake
« Reply #4 on: July 15, 2020, 03:23:20 PM »
When you do this do you worry about the ring of Brown hop matter stuck to the side of the fermenter? Batch two will naturally submerge that stuff and I hear it is pretty bitter. No negative side effects?

Not that I've experienced
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