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Old 03-25-2010, 11:28 PM   #1
deviousalex
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Mar 2010
Palo Alto, CA
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How long can you keep washed yeast in the fridge for? I generally don't like to do two of the same style of beer one after another.



 
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Old 03-25-2010, 11:35 PM   #2
Bubba
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Oct 2009
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I have some rewashed yeast in my fridge thats over a year old now I just make a starter to check its viability and have had no problems so far. I have a wyeast 1098 on 12th generation that still ferments 6 to 12 hrs after pitching.



 
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Old 03-25-2010, 11:41 PM   #3
deviousalex
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Mar 2010
Palo Alto, CA
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12th generation? Whatever happened to the 4-5 rule?

 
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Old 03-25-2010, 11:44 PM   #4

It's turned into an 8901.

 
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Old 03-25-2010, 11:48 PM   #5
Bubba
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Oct 2009
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I agree with the 8901 but it is still attenuates as strong as it ever was maybe a little off on flavor but not enough for me to worry about.

 
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Old 03-25-2010, 11:56 PM   #6
Schnitzengiggle
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Feb 2009
Tucson, AZ
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About a month ago I used some WLP004 that was 1st gen washed sitting in my fridge for about 6 mos or so, it was a 10 gallon batch of a stout.



Only thing is that my attenuation sucked, 60.5% AT. Having said that, the best attenuation I have ever gotten with this yeast is 64%, and Whit Labs states the attenuation range is 69-74%.

So I can't say whether or not the age of the yeast has anything to do with it, I did mash at a higher temp, and about 30% of my grain bill were unfermentables...just sayin'.

On a side note, I have more in my fridge that I plan to use, so I'm going to experiment with it.


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