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Old 05-22-2011, 11:26 PM   #1
Sep 2010
Posts: 2

I accidentally left my tube of yeast of the car this weekend following a trip to the LHBS. It probably spent 4-6 hours in the hot vehicle with temps i am guessing into the 90's. Is this yeast still good or should i get a new one?

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Old 05-22-2011, 11:30 PM   #2
Jan 2011
oakland, california
Posts: 3,294
Liked 161 Times on 151 Posts

i'd just get a new one. while you're there pick up a few packets of dry yeast, you can use them in these types of "emergencies" or you might like them and start using them regularly like i do.

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Old 05-22-2011, 11:35 PM   #3
Apr 2011
porsgrunn norway, lol
Posts: 552
Liked 7 Times on 6 Posts

Make a starter, yeast dont get killed that fast under 100f

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Old 05-23-2011, 03:40 AM   #4
biochemedic's Avatar
Jun 2010
Carnegie, PA
Posts: 2,206
Liked 246 Times on 185 Posts

I once left an activated Wyeast pack out on my deck (in the sun) and the black package was nearly too hot to touch when I remembered...it made a starter without difficulty, and a good beer...
Packaged: Fruitcake Old Ale
Primary: 15 Min Pale Ale (Waimea hops), Unoriginal clone (hoppy session mead)
Secondary: Why do I keep this line here...?
Bulk Aging: Simple Cyser '15, Cocobochet, Wild Cider (2014 & 2015)
Planned: So many ideas, not enough time to brew them....

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Old 05-23-2011, 03:53 AM   #5
Sep 2010
Ann Arbor, Michigan
Posts: 1,171
Liked 20 Times on 20 Posts

If you can return it and get a new one for no extra cost, do it.
If you need yeast immediately, get a new one.
If you have the time, try out a starter.

Nothing wrong with seeing if it's still viable if the alternative is to dump it, no matter if the yeast has been hot, or it's over a year old.

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Old 05-23-2011, 03:57 AM   #6
Aug 2008
Portland OR
Posts: 5,387
Liked 63 Times on 59 Posts

It should be fine. People get yeast shipped all the time and they undergo big temp swings. How do you think yeast gets to the LHBS? Make starter as suggested !

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