07/20/08 09:41 AM
Repitching yeast after 1 month?
I have ~1/2 qt. of wlp530 slurry that will be one month in the fridge next week. According the the Mr Malty yeast pitching calculator the yeast will be at 60% viability and will need 320billion cells for a 5.25 gal batch or 179ml. of thick slurry for OG 1.070.
First, based on the time in the fridge should I use it or chuck it. Second, although a thick slurry I would make a 2l starter just to make sure things going again.