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Old 12-07-2011, 01:23 PM   #1
Nov 2010
raleigh, nc
Posts: 21

Is it possible to freeze yeast, after washing, so that it can be saved for a long period of time? I know most people say you can only store year for 2-3 weeks at most, but that's in the fridge.

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Old 12-07-2011, 02:00 PM   #2
beerloaf's Avatar
Feb 2011
Boise, Idaho
Posts: 619
Liked 19 Times on 19 Posts

Yes it's usually done with glycerin which you can get at your LHBS to preserve the yeast cell walls from freezing and rupturing. Most people however will make a starter first and take some small amounts of that, that way they have a lot of fresh and healthy yeast and then pitch the rest when they brew. Look up the yeast slanting threads and stickies. They go into a lot of detail about the whole process.

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Old 12-07-2011, 02:39 PM   #3
Aug 2008
Portland OR
Posts: 5,387
Liked 63 Times on 59 Posts

2-3 weeks in the fridge is not true. If you are making a starter from washed yeast it will last a lot longer.

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