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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: 3,287
Liked 158 Times on 148 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 6 Times on 5 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: 2,154
Liked 221 Times on 166 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: 15 Minute APA, Simple Cyser '14 (Nelson Sauvin Dry Hopped!), Spiced Cider, Spur of the Moment Graff
Primary: Simple Cyser '15
Secondary: Why do I keep this line here...?
Bulk Aging: Cocobochet, Wild Cider (2014 & 2015)
Planned: Fruitcake Old Ale, Not Just for Breakfast Stout. Otherwise, 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: 1,170
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: 5,373
Liked 62 Times on 58 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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