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Old 01-27-2013, 01:48 PM   #1
razzle
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Default Help! can yeast survive a big temp drop?

i pitched danish lager yeast at 56 on Jan 12th, set up primary fermentation on my back porch. it sat for almost a week at 50ish temps, then we got an arctic freeze in vermont - porch temperature was in the 20's. thermometer on ale pail only goes down to 36, and it was definitely colder than that . i couldn't move it off the porch for 2 days, and now it's stable at 54. can the yeast recover? it had a good week at lagering temps before it dropped. i had planned to move to secondary this weekend, but don't want to shock the yeast too much. any advice?

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Old 01-27-2013, 01:53 PM   #2
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The yeast likely survived. You should check the gravity to see how far along the fermentation is. I would give it some more time at the poper temps, since activity probably stalled while the temp was low.

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Old 01-27-2013, 02:07 PM   #3
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og 1.042, just now 1.013. think i should let it sit in primary another week?

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Old 01-27-2013, 02:56 PM   #4
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It sounds like the ferm should be mostly finished. You were really able to hold a consistent 50 degrees on your porch?

I would keep it at lager temp for at least another week, just so the yeast have enough time to wake back up and clean up any off flavors.

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