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Old 06-01-2011, 01:28 AM   #1
AmusedBystander
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Default What is too cold for lager yeast?

Hello, I'm new to lagering. Is 40 degrees too low? Also, will the beer take longer to carbonate when I finish it? Thanks for your help!

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Old 06-01-2011, 01:30 AM   #2
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For fermentation, you want to stay around 45-50, depending upon the yeast chosen (check preferred temperature on the particular strain you are using). For lagering (different from fermentation), I like to lager around 33 - 35.

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Old 06-01-2011, 01:39 AM   #3
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thank you; assuming you bottle and not keg... does carbonization take longer longer when the beer is cold than it does at room temp?

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Old 06-01-2011, 01:51 AM   #4
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Yeah, there's no reason to store lager bottles at any lower temps than ales. All beers need to bottle condition around 50-65F ideally for a few weeks. If you go colder than that, you'll need to wait a few extra weeks probably. Also, did you lager the beer in a secondary fermentor for more than a few weeks? If so, you might need to add a extra week or three for the bottles to carb up, but they'll still carb just fine.

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Old 06-01-2011, 01:52 AM   #5
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I do both. For lagers, I'll bottle them. Yes, carbonation does take longer when it is cold.

When I do a lager, I'll ferment around 45 or so like I said before until it is about 80% complete, as measured by a hydrometer. Then, I'll remove from the fridge and allow to warm to room temp for about 3-4 days for a diacetyl rest. Check gravity again to ensure it is done. When complete, rack and cool down to about 33 or so a degree or 2/day. Keep at that temp as long as you can. This is your lagering phase. After this, warm up to room temp and package.

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