My apologies if this is already addressed. I did a search but Didn't find what u was looking for. Does anyone have any advice on yeast expiration? I have a bottle of WLP004 that shows best used by jun 6-13. Any issue pitching that tomorrow? Thanks in advance!
Yeast expiration
- Thread starter akdmax
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I would highly recommend a starter, and / or getting a different vial. Yeast vials lose viability as they get older, and after that best by date, you may still get fermentation but who knows how many viable / healthy cells you'll have. Could use it, but would have better results with newer yeast.
Hope that helps, cheers!
Hope that helps, cheers!
I'd recommend a starter. You only have approximately 23% viability there. Looking at the BS yeast tool, it is calling for 2 vials at that viability with a .85mL starter, so I would say maybe a step up starter would be called for. That is based on an OG of 1.048. There are several threads regarding this on here.
A starter is definitely the way to go (though to be honest, I pretty much always advocate starters regardless of the yeasts viability).
I've gotten yeasts older than that going before, so with a good sized starter, plenty of aeration and yeast nutrient you should easily be able to use that yeast.
I've gotten yeasts older than that going before, so with a good sized starter, plenty of aeration and yeast nutrient you should easily be able to use that yeast.
