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Old 03-16-2012, 10:28 AM   #1
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Default freezing yeast

I know from working in a microbiology lab that the way to freeze bacteria and yeast is to freeze them in a mixture of glycerine and broth. Has anyone done this to keep your yeast genetically same?
The idea would be to keep the yeast frozen then transfer it to a slant and then to a starter. It would also take up no fridge space and minimal freezer space, keeping the wife happier.

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Old 03-16-2012, 12:04 PM   #2
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Yes, there are threads on this forum about freezing yeast. Never done it. I just chill my yeast harvested from split starters.
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Old 03-16-2012, 12:20 PM   #3
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Done it lots. Loads of other people here too. Works great, but the time and materials to build up the small frozen sample wasn't worth it to me. I just save much larger jars of yeast trub from previous batches. Works better IMO.
- Andrew
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