Is this yeast OK? Trust it?

[Panderson1]

I collected it from a conical on 03-19. Put it in the fridge. But then took it out of the fridge a week later and let it warm up and sit at room temperature for 3 days (long story). The lid expanded so it might have been/still be under pressure from the warm up. 1st harvest from US05 dry yeast. It's been back in the fridge the last 2 days. Never opened it since the collection.

My buddy wants to brew tomorrow and I don't have any other yeast. It's a full mason jar and looked pretty good coming out the conical. The beer it came from went well.

 

[BrewZer]

I'd say pitch it, but have a spare packet on hand just in case.

 

[day_trippr]

Unless that mason jar has been abused there's a crap ton of yeast therein that at less than two weeks of age should be total marauding killers!
Pitch and prosper!

Cheers!

 

[heartofgold]

I was just reading articles related to yeast viability during transfers. Your main issue with the 3 days at room temp will be the depletion of glycogen reserves in the yeast cells; and on top of that you'll have a few dead soldiers...but I'd go for it! Just tell your buddy to aerate the crap out of your minions. You may see extended lag time but you'll be fine.

 

[Toxxyc]

Pitch it. I've forgotten a jar of yeast in the pantry for more than a week before, and then just stuck it in the fridge. 3 months later I still pitched it and it went fine. I just made a little starter with it. Poured over into a bigger jar and added some frozen wort from earlier into the jar, left it overnight and it was richly active.

 

[odie]

do it