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Old 07-13-2010, 02:23 PM   #1
Hilbert
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I saw a couple articles out there that talks about freezing yeast but they all seem to tell you to tranfer the slurry to test tubes before you freeze.

I wash my yeast and store them in small mason jars. The problem I am having is I am running out of room in my small beer fridge. When I bought my last batch of small mason jars on the package I noticed it started that the jars are safe to freeze.

My questions are: Can I freeze my washed yeast in mason jars? Do i need to do anything before I freeze them or can I just stick the jars in the freezer? Same with after I take them out of the freezer?

Thanks
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Old 07-13-2010, 02:31 PM   #2
King of Cascade
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you cant just put the yeast in the freezer. The mason jars might work but follow this
http://www.homebrewtalk.com/f13/guid...st-bank-35891/

 
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Old 07-13-2010, 02:39 PM   #3
HalfPint
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Yeast be cheap man. I'd just wash it and then when that either gets too old or you run out (I do b/c I don't like to re-use too much yeast) just buy some more. I know that I really only use about 4 yeasts for all of my brewing, so it's fairly easy.

 
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Old 07-13-2010, 04:41 PM   #4
Scimmia
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You need some kind of cryoprotectant before you stick them in the freezer. You could use mason jars, but you'd be going through so much glycerol that it wouldn't be worth it.

 
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Old 07-13-2010, 04:50 PM   #5
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I don't know that the mason jars wouldn't break in the freezer, even if you used a ton of glycerine. Shop around, you can find all manner of plastic tubes to use for a frozen yeast bank.

Edmund scientific and american science and surplus should carry some. http://scientificsonline.com/

American science and surplus even has petri dishes. http://www.sciplus.com/category.cfm/subsection/4
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Old 07-13-2010, 05:16 PM   #6
bja
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How many different kinds of yeast do you have? And how many of each?

You could go buy a mini fridge just for yeast. They're cheap.

 
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Old 07-13-2010, 05:56 PM   #7
Hilbert
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i usually wash my yeast into 4 jars and when i get down to the last two I wash that batch.

I tend to save any yeast that I don't have. So depending on the style I'm brewing I have the correct yeast. For example I just brewed a stout so I bought White Labs Irish Ale and I washed that. Well now I have 4 jars of Irish Ale for my stouts, porters, etc. But I may not do another stout for a couple months. So the tend to pile up after a while.

Thanks for the feedback. I'm not sure if it's worth the effort just because I can usually wash the yeast 3 or 4 times and that's at a minimum 12 batchs from one yeast vial. So to go buy a $6.00 vial of yeast every 12 batches doesn't seem to bad. I was more for a space saver than anything.
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