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Old 12-13-2013, 12:06 AM   #1
juggabrew
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Default Splitting yeast starter to save

Hey I want to start reusing my yeast and was thinking of just buying a vial/pack, making a starter then splitting it. This seems like it would work great rather then saving my yeast cake which sounds like that works as well. But if i do not plan on brewing for a while I could just save these for future use it would be like buying a new pack each time. any thoughts as theres not much on this

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Old 12-13-2013, 12:37 AM   #2
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This is an established, and considered the easiest by proponents, way to save yeast. The part I'm not so sure about is how long you want to save it - 1 week, 1 month, etc. makes a difference in how you store it. I believe there are a thread or three that go into this in detail - I believe glycerol is used and the yeast can be frozen.

An additional benefit to this method is that you do not age the yeast a generation - meaning you start with a generation X yeast you get two copies of generation X, in yeast washing you get a generation +1 and all of the corresponding good/bad (mostly) mutations.

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Old 12-13-2013, 12:58 AM   #3
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I do it all the time.

Sometimes I make a starter larger than needed, other times I just take half from the first step and then step up the remainder.

When the starter is finished, I swirl it around to get the yeast into suspension, and take off about 1.5 pints. I cold-crash this and then pour off a pint, leaving about 7 ozs with all the yeast. This gets poured into a sanitized 8 ozs mason jar and stored in the fridge. Sometimes I leave the beer in, but usually pour the beer off after a month or so and replace with distilled water.

I recently made a new starter out of some yeast I had stored this way 29 months earlier. This is the longest I have ever left one before trying to use it again. It worked fine, showing activity within a day. I have not had a problem with any of the yeasts I have stored this way.

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Old 12-13-2013, 02:33 AM   #4
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I'm looking to store the yeast for maybe a few months or so. I would only split it to make 4 jars because of space. I've seen the freezing with glycerine but that's to involved for me right now. I'm just going to put it into the fridge.

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