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Home Brew Forums > Home Brewing Beer > General Beer Discussion > Split 10 Gallon Diacetyl Rest Question
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Old 12-06-2010, 03:04 PM   #1
Morkin
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Default Split 10 Gallon Diacetyl Rest Question

Here is what I got.


I split 10 gallon batch of American Lite Lager into a 6.5 and 6 gallon fermenter. I then pitched starters into both of them separately.

I was quite inebriated when I pitched. I swirled the starters well I thought, but the fermentor on the left took off and the one on the right took off about 36 hours after the first one.

My question comes in the diacetyl rest. I'm fermenting at 50 and pitched at about 58-60, so I want to make sure all of the diacetyl is eaten up.

But, the first fermentor is going to be done faster then the one on the right, and if that is the case, when should I raise my temperature? When the first one is almost done, or should I wait for the second one to be almost done before turning up the temperature?

I've done lagers before, but this is the first with a split batch 10 gallon. Any suggestions? THanks.

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Old 12-06-2010, 03:05 PM   #2
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picture didn't post though sorry

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Drinking - Germann Pumpkin Ale
Primary- Schwarzbier
Secondary - Nothing
Bottled - Gose, Eisbock
Kegged - Nothing
Next Batch -
Planning - Berliner Weisse

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Old 12-06-2010, 03:10 PM   #3
pompeiisneaks
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I seem to remember reading that the diacetyl rest is more of a window than an exact time. I think you should wait until the second batch is hitting that window to warm up both and it will be fine. The yeast can still clean up diacetyl a little later than the optimal time, so long as it's done before dropping to layering temps. But you may do better to wait for confirmation because I can't recall where I read that and I may be pulling It outta.... Who knows where.

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