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Old 01-10-2011, 04:48 PM   #1
shotputman
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Default Bad Washed Yeast?

I had a quart jar with some washed 1098 yeast in it from the beginning of Aug, I was going to use in a yeast starter, but when I opened it it smelled faintly of vinegar and had a weird gray layer on top of the yeast on the bottom.

Anyone experienced this? Was I right to just dump it down the drain?

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Old 01-10-2011, 05:04 PM   #2
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You were right to dump it. That yeast was dead. About the greatest length of time that you can keep washed yeast, and it still being really viable is a month. After 2 weeks of being washed it loses about 50% of it's viability.

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Old 01-10-2011, 05:11 PM   #3
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Really? Reading a lot of the threads on here, people have said they had success with yeast kept for a year!

But yeah, something definitely wasn't right!

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Old 01-10-2011, 05:17 PM   #4
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Weirder things have happened.

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Old 01-10-2011, 07:29 PM   #5
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Quote:
Originally Posted by shotputman View Post
I had a quart jar with some washed 1098 yeast in it from the beginning of Aug, I was going to use in a yeast starter, but when I opened it it smelled faintly of vinegar and had a weird gray layer on top of the yeast on the bottom.

Bad sanitizing of water/jar/hands and anything else that may have come into contact. Really no need to rinse the yeast slurry and its just another chance to infect it.

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Originally Posted by DrawTap88 View Post
About the greatest length of time that you can keep washed yeast, and it still being really viable is a month.
Many people who don't rinse have saved yeast for months without any problems (myself incl.)

A peek into my fridge shows 2 jars from sept -oct just waiting to be used.
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Old 01-10-2011, 11:30 PM   #6
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I'm with the rest here...sounds like an issue with the original washing, not age.

I've used yeast way (WAY) older than that and had great success...both whack pack and washed.

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Old 01-10-2011, 11:38 PM   #7
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Quote:
Originally Posted by Houblon View Post
Bad sanitizing of water/jar/hands and anything else that may have come into contact. Really no need to rinse the yeast slurry and its just another chance to infect it.



Many people who don't rinse have saved yeast for months without any problems (myself incl.)

A peek into my fridge shows 2 jars from sept -oct just waiting to be used.
This!
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Old 01-13-2011, 12:04 AM   #8
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So do ya'll just clean/sanitize jars and dump your slurry right in?

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Old 01-13-2011, 01:39 AM   #9
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It is never wrong to throw out something that you suspect is infected or bad if it is easily replaceable. The only way to know for sure is to try it in a batch or culture it. For the most part it isn't worth it. I've been washing some Notty, not because of cost, but I have some that I know is good and I don't want to risk NEW. Oh the irony..

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Old 01-13-2011, 04:42 AM   #10
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vinegar? sounds like acetobacter

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