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Old 01-17-2012, 01:20 AM   #1
MHUSS
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Nov 2010
Omaha, ne
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As I was putting my hops in the freezer. I accidentally put my Safale 05 dry yeast also in the freezer. They were in there a couple of weeks. My question is: is the yeast still good or can I hydrate them and still use them?

 
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Old 01-17-2012, 02:12 AM   #2
Clementine
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May 2011
Waynesboro, PA
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Freezing Yeast kills them as ice crystals form inside the cell and as ice is larger than the water used to form the ice it breaks the cell walls. So as there is no less water in dry yeast it might be OK. That said I would go get some more anyway.

Clem

 
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Old 01-17-2012, 02:17 AM   #3
pabloj13
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Dec 2011
Durham, NC
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Freezing Dry Yeast | Danstar Premium Beer Yeasts - The Dry Yeast Advantage

Should be fine, assuming the packaging was intact. These yeast are dehydrated, so no water crystal damage.
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Simple and easy wort aeration - Harvest yeast from your blowoff - Homebrew Spicy Mustard

 
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Old 01-17-2012, 06:51 PM   #4
MHUSS
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Nov 2010
Omaha, ne
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Thanks. I think I will use them but have something for backup in case they don't take off.

 
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