How hot is too hot?

[OldStyler]

What is the highest temperature possible to pitch yeast into the wort - White labs vial. Buddy threw yeast in at 110. Dead? Thanks guys!

 

[Yooper]

It would probably survive at up to 120 degrees, I think.

 

[ChillWill]

Well you rehydrate at dry yeast around 90-100 don't you? It'll probably ferment although that's far from an ideal practice.

 

[SkylerChaBro]

Hum, I guess they may still be alive. Either way if it ferments over 70 he's going to have some very strong off flavors.

 

[dragonbreath11]

Not sure about 120 but some Belgian brewers do 90s.

 

[Homercidal]

It will be fine, but you REALLY want to get the temp down ASAP! Yeast are pretty happy at around 90, but they also produce plenty of flavors you won't want in your beer.

 

[AmandaK]

It will be fine, but you REALLY want to get the temp down ASAP!

Reducing the temp too fast will also force the yeast to go dormant. Either way, off flavors will abound.