I made a Sweetwater IPA wannabee a month or so ago with Denny’s Favorite (Wyeast 1450). I really like this yeast. I kegged it about two weeks ago, but left it and about a half gallon of beer in the fermenter. It’s been setting in my house since. Is the yeast still viable to use for a beer I plan to brew next week? The temperature hasn’t gotten above 80F, but are such high temperatures bad for the leftover yeast? Opinions are welcome! ;D
Try feeding it up or making a starter to see how viable it is.
Normally, it’s better to decant the yeast and some of its beer to a flask or a jar and store it in the fridge. Doing that, I’ve used a recycled slurry as much as 6 weeks later (though for me 3 is more typical). In any case, next time, keep it in the fridge.