Re-using Yeast

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Re-using Yeast

Postby pfrichar » Tue Mar 02, 2010 8:13 am

I saved some of the trub from the bottom of a primary in which I used Safale 05 to ferment a 1.045 gravity ale. I packaged the slurry in two sanitized bottles, capped them and refrigerated them.

Will I be able to re-use this yeast and how?

How long will it keep?
New brewer (since 11/09). Brewing with extracts but thinking all-grain is in my future.
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Postby bobcat_brewer » Tue Mar 02, 2010 9:33 am

Assuming there were no flaws during fermentation (infection, stress, etc), you can use that yeast again. I don't wait any longer than 1 week before re-pitching.
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Yeast Life

Postby brewmeisterintng » Fri Mar 12, 2010 8:29 pm

That is up for debate. I have quite a few different yeast sitting in the refrig. I always make a yeast starter before pitching to make sure they are still active. With that said... I have used yeast six months old that has been sitting in a Mason jar under a inch or two of beer without an issue. Keeping everything clean is real important.
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