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Old 11-30-2006, 05:25 PM   #1
debtman7
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Default reusing yeast cake, more than once?

I did the caramel cream ale and then pitched a pale ale onto the yeast cake from that, no problems so far. Now, I'm ready to do a porter, can I reuse the yeast cake again? The yeast has had beer sitting on it for 3 weeks now, is that pushing it? Should I toss it and get some fresh yeast, or can I keep using it?

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Old 11-30-2006, 05:35 PM   #2
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If the beer that's on it tastes good, use it once more, then discard it. Using yeast more than about 3 times in that manner is usually not recommended due to mutation and/or possible contamination. You may consider harvesting about a pint of the cake to use for pitching, then rinsing out your fermenter, since 2 beers' worth of trub/yeast is quite a bit.

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Old 11-30-2006, 06:24 PM   #3
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I'll agree with Yuri, pour off a pint & clean the fermenter.

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Old 11-30-2006, 06:29 PM   #4
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Do you not get a off taste from the trub?
Could you do it with a secondary?

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Old 11-30-2006, 07:50 PM   #5
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Yeah, I figure I should save some and clean the bucket, it's a bit messy now I wasn't worried about off flavors since the first two batches were similar. Since the 3rd batch will be a high strength porter, I'm not really worried about it there either.

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