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Old 09-22-2011, 02:04 AM   #1
Calder
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Mar 2010
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I'm wondering if this is something different, or if people have done this before.

I have an all-Brett beer going. Pitched Brett-B at 1.060, after 4 weeks was clearing and was down to 1.016 and stable. I racked the beer off the yeast, and then added ~20% of the cake back in. 3 weeks later it is cloudy and started fermenting again.

This is my third time doing this. The first 2 started at similar gravities (1.055-1.060).

The first got down to 1.018 and stopped and cleared. I racked and re-pitched part of the cake, and by 12 weeks had gotten down to 1.004.

The second got down to 1.008 and stopped and cleared. I racked and re-pitched part of the cake and by 10 weeks had gotten down to 1.002.

 
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Old 09-22-2011, 07:28 PM   #2
dcHokie
 
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I'm wondering, for an all-Brett beer, wouldn't just rousing the yeast during the primary ferment accomplish the same thing?
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Old 09-23-2011, 08:17 PM   #3
stevehollx
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Regarding rousing the yeast--isn't disturbing the pellicle a bad thing to do, since it will expose the Brett to more oxygen (and potentially create higher levels of acetic acid)?

 
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Old 09-24-2011, 06:13 AM   #4
ReverseApacheMaster
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The oxygenation from racking is probably essential to restarting fermentation from brett to kick it out of the primary fermentation qualities into the secondary fermentation qualities. You could probably do the same thing by agitating the fermenter to degas the beer, just like when making mead.

 
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Old 09-28-2011, 04:39 PM   #5
dcHokie
 
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I'd be curious to see the difference in fermentation doing a side-by-side experiment with 1 fermenter getting agitated and 1 fermenter getting the rack & re-pitch treatment.

Calder, you mentioned your 3rd time doing this. Has this consistently been your process for funky beers, or is this a change in process for all-Brett beers?
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