Yep, hasn't happened to me before, but after letting my 1L starter go at it on the stir plate for a couple of days, I opened it has a strong rubber smell. Guess it's time to throw that washed yeast away and spend the $3.50 on a new pack.
My S-05 starter smells like rubber...I guess I've got to throw it out.
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broadbill
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Out of curiosity: Why are you bothering to make starters for dry yeast?
hamiltont
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"Washed Yeast" = S-05 rerun....
coldrice
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i find that the rubber stoppers that i use in my half gallon growlers that i use for starters make everything smell like rubber. this has alarmed me a few times now but i've always been fine. make a starter wort with light DME and ferment it out. if it tastes like crap, scrap the yeast. if it tastes like bland beer, you're good.
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HalfPint
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I usually just throw a piece of foil over the top of mine, then sit it on the stir plate for 2 days. I've never had this smell before, but after investigating a bit further, I've noticed my jar of washed yeast also has this off smell.
Your washing technique isn't getting all the dead yeast out, I bet... sounds like there is some autolysis.
This is why I quit washing yeast and started slanting.
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