How long until I shouldn't wash and reuse yeast from primary?
I usually keg my beers after 10-14 days and then wash and reuse. I have a batch if brown ale that has been in primary for 4 weeks now. I've never harvested from long primaries...
4 weeks shouldn't be a problem, I've done it before. Can't tell you where the "line" is, but at 4 weeks you should be safe. Especially if you make a starter with the washed yeast, like you should anyway.
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Originally Posted by petey_c
"Lets say your local bar pours an American pint where 15% of the beer is missing due to headspace. Every 6.66 beers you drink you 'll have been missing 1 entire beer". 6.66 beers!. I wonder who's really responsible for the missing beers... I don't know, maybe Satan??!