Brew-boy

Recipes 

Here in Michigan its been about 10-20F outside. I have a fridge outside in my garage and when I pulled the yeast out I found the White labs vial had froze. I this yeast no good any more? I was going to make a starter from it.

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Yooper

Recipes 

You most likely killed it- but I would go ahead and try it. Thaw it out and make a starter. Even if just a few survive, they'll propagate. Good luck!

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boo boo

Recipes 

Yeah you have nothing to lose at this point.

I freeze my yeast all the time but I do it with
glycerin to keep the cell walls from bursting.

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Sir Humpsalot

Recipes 

My wyeast arrived frozen (package sat outside too long). I just made a starter for it to get the cell count up.. no problem!!!

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FlyGuy

Recipes 

Thaw it VERY slowly, and the yeast will probably be all right, particularly if it didn't get very cold for very long. Like YC said, do a small starter and see. If it doesn't take off right away, you know not to use it.

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