Using Frozen Yeast

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I'm going to keep the group posted on my experiment with freezing and
thawing yeast.  I had about 1/2 cup sediment from a primary of Wyeast
Cal. Lager yeast.  This was almost a year ago.  I mixed about 1 part
to 9 or 10 parts vegetable glycerin/sediment.  Kept it frozen.  About
two days ago I thawed the yeast, kept in a 1/2 cup Rubbermaid
container, in the fridge and made up a 1 quart starter at about 1.040.
Pitched the yeast when the starter became mildly warm to the touch.
Occasionally agitiated the starter in the glass gal. jug.  Am using
two layers plastic wrap secured by a rubber band instead of an air
lock.  Was slow to start, but today seems to be at high krausen.  Will
make up another starter soon with 2 quarts at 1.040, and will pitch
the new slurry into that.  I plan to use this in a Pre-Prohibition
Lager recipe.  

Re: Using Frozen Yeast

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Good luck.  It should work as well as fresh yeast.

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