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Old 01-28-2010, 11:54 PM   #1
HI_SALENITY
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Default Yeast washing ?

After 4 weeks in the primary can I still wash and reuse the Yeast or is that too long ? I haven't been able to find any info about how long the yeast stays good but I was thinking I had heard reusing the yeast was for those that did 7-10 day primary's and the yeast would die off or consume each other if left in the primary for an extended length of time .

Obviously they don't all die or the priming sugar wouldn't work.


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Old 01-29-2010, 12:02 AM   #2
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4 weeks in the primary is no big deal, there should still be plenty of healthy, viable yeast cells. I tend to skip the secondary and just primary for 4-8 weeks, depending on the brew, and I've yet to have a problem washing yeast, or just pitching onto a yeast cake for that matter.

Hope that helped.


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I would never use a dead mouse in my beer. It's much better to use live ones. You could probably just steep a dead one, but live ones must be mashed. Actually, smashed and mashed would be best.
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Old 01-29-2010, 12:13 AM   #3
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Cool, One more thing after I boil the water how cool should I let it get?
Can I just do this by putting the pan in ice water or is it necessary to put it in the refrigerator overnight?
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Old 01-29-2010, 12:18 AM   #4
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i let the water cool to room temperature. i've put in in the fridge, and just left it sitting on the counter (with lids on the jars). both equally effective.
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Old 01-29-2010, 12:20 AM   #5
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What BA said. Anything under... say 80-ish should be fine. Careful with moving a jar full of boiling water straight into an ice bath though.
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Old 01-29-2010, 12:24 AM   #6
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If washing from the primary cake, do the hop particles have any negative effect or does it not matter?
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Old 01-29-2010, 12:26 AM   #7
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Austin: that's the whole idea of washing, it seperates the viable yeast from all the other gunk in there. Hop particles, dead yeast, hot/cold break material, etc...
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I would never use a dead mouse in my beer. It's much better to use live ones. You could probably just steep a dead one, but live ones must be mashed. Actually, smashed and mashed would be best.
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Old 01-29-2010, 12:28 AM   #8
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Hah, wow. Talk about right over my head. No one's ever accused me of being smart.
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Old 01-29-2010, 12:31 AM   #9
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No worries, the whole concept of yeast washing was miles above my head for a long time. Then I tried it once, and it was surprisingly simple. Hell, at one point I was afraid of doing even a yeast starter! The whole boiling and stirring thing was just too much for my fragile little mind.


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I would never use a dead mouse in my beer. It's much better to use live ones. You could probably just steep a dead one, but live ones must be mashed. Actually, smashed and mashed would be best.
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