For the first time ever I have not been able to re-start a fermentation. My cider stopped fermenting because the temperature fell so much - temperature of liquid was only 8C (I live in a fridge it seems). I stuck the heating belt on, got it up to temperature, gave it a stir, but the gravity didn't drop at all over the next 6 days (1.020). Anway, I added some more cider yeast and now it's frothing away nicely. My question is: I thought yeast only went dormant at low temperatures, so if that is right, why did it not wake up and start work when I raised the temperature? And at what low temperature will it die?
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Yeast - temperature
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Once rehydrated and in a living state, yeast tends to suffer the same fate as most other living things when exposed to cold temperatures - too cold and they will die. Some strains are fairly hardy, though. One time I actually took delivery of a bucket of refrigerated juice from one of our local distributors that was happily bubbling away at 2° C.Steve
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