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Old 09-09-2013, 05:15 AM   #1
Sep 2013
Posts: 6

Can anyone provide me with a step by step process on how to re culture the coopers yeast from the bottles?? And how many bottles to use?

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Old 09-10-2013, 05:15 PM   #2
Compulsive Hand Washer
ColoHox's Avatar
Oct 2011
Fort Collins, CO
Posts: 1,884
Liked 415 Times on 293 Posts

The more bottles you use, the higher the likelihood you will be successful.

In general, the procedure is to pour off the beer (into a glass of course), swirl the dregs at the bottom and pour them into starter wort. You should go for a few bottles worth of dregs into a 500ml starter. When the 500ml starter is fermented out, you should step it up to a 1000ml or larger starter.

The key for this whole process is sanitation. It is very easy to accidentally upscale a whole batch of contaminating bacteria instead of the yeast-of-interest.
Bacteria are the only culture some people have.

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Old 09-10-2013, 07:40 PM   #3
WoodlandBrew's Avatar
Oct 2012
Malden, MA
Posts: 2,191
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ColoHox has it.

Here is a little more detail:
The 2nd edition is now available: Brewing Engineering
Woodland Brewing Research Blog Applied Science for Better Beer.

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