I had a kit that was supposed to be delivered about three weeks ago, it’s been bouncing around in the mail and has just now found its way to my house.
My question is, is the liquid yeast still safe to use? It is not inflated, but with bouncing around in the mail for so long, I’m not sure if it’s safe to use.
Last week I brewed a hefe that came with wyeast liquid weihenstephan yeast–packaging date august 28, 2013. So almost 4 months old. Did a two step starter–fermentation began about 10 hours after pitching and is still going now 5 days later. I definitely agree with advice above. It’s very possible the yeast is viable, but I would absolutely do a starter to be sure.