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Old 08-29-2012, 11:33 PM   #1
WilliamWS
 
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I've been kicking around the idea of doing an all-brett RIS with Brett-B Trois and Brett-C. I've done a number of soured farmhouse ales, etc. but have never done an all-brett fermentation.

It's my understanding that brett doesn't attenuate quite as much by itself. So my question is what sort of attenuation should I expect (shooting for an OG around 1.100)?

Thanks

 
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Old 08-30-2012, 12:23 AM   #2
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Quote:
Originally Posted by WilliamWS View Post
I've been kicking around the idea of doing an all-brett RIS with Brett-B Trois and Brett-C. I've done a number of soured farmhouse ales, etc. but have never done an all-brett fermentation.

It's my understanding that brett doesn't attenuate quite as much by itself. So my question is what sort of attenuation should I expect (shooting for an OG around 1.100)?

Thanks
With proper pitching (lager pitching rates) and the right fermentation temps, an all-Brett beer should give you similar attenuation to a sacch strain.
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Old 08-30-2012, 06:49 PM   #3
Vaughn
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No need to pitch Brett at lager pitching rates - you should treat it like sacch when using it in primary fermentation. It will easily attenuate better than sacch.

 
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Old 08-31-2012, 06:56 PM   #4
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Quote:
Originally Posted by Vaughn View Post
No need to pitch Brett at lager pitching rates - you should treat it like sacch when using it in primary fermentation. It will easily attenuate better than sacch.
No, you need lager pitching rates on ALL BRETT beers. And yes, it does act like a sach strain as far as attenuation percentage. I have a barrel aged RIS that was fermented clean and put in with Brett/Lacto/Pedio. SG was 1.120 and it finished at 1.018 I can't imagine you'll get much past 1.030 with all brett.

 
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Old 08-31-2012, 07:23 PM   #5
Vaughn
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Where did you draw this conclusion from? Every Brett primary beer I have done has reached 1.001-1.006. I can't imagine you only get to 1.030!

 
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Old 08-31-2012, 07:35 PM   #6
Guess42
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Originally Posted by boostsr20 View Post
No, you need lager pitching rates on ALL BRETT beers. And yes, it does act like a sach strain as far as attenuation percentage.
Have several times pitched brett straight from a wyeast to four gallons. All the beers have turned out good, so I don't believe you need to pitch at lager rates. Do agree with the attenuation, however.

 
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Old 09-01-2012, 01:16 AM   #7
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Quote:
Originally Posted by Vaughn View Post
No need to pitch Brett at lager pitching rates - you should treat it like sacch when using it in primary fermentation. It will easily attenuate better than sacch.
I'm in the camp of pitching high and it not attenuating too well. I've made several all-brett beers, and generally I get worse attenuation than sacc yeasts. I've added sacc to help finish a couple of them off.

I have only used WLP650 (Brett-B) and really like it, but I get anything from 67% to 80% attenuation. I haven't figured out what causes the big variation.

 
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Old 09-01-2012, 03:17 PM   #8
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Quote:
Originally Posted by Vaughn
Where did you draw this conclusion from? Every Brett primary beer I have done has reached 1.001-1.006. I can't imagine you only get to 1.030!
I lost all my old emails but that info came from Chad Yakobsen of crooked stave who did his masters dissertation on brettanomyces. It's pretty common knowledge these days.

 
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Old 09-01-2012, 03:19 PM   #9
boostsr20
 
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Brett super attenuates when lacto/pedio come into play but not on all Brett beers. Store bought Brett cultures contain a less viable cell count than sacch packs so a starter is a must no matter the gravity.

 
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Old 09-02-2012, 01:20 AM   #10
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Originally Posted by boostsr20 View Post
Brett super attenuates when lacto/pedio come into play but not on all Brett beers. Store bought Brett cultures contain a less viable cell count than sacch packs so a starter is a must no matter the gravity.
This, Wyeast has said there smack packs of brett arent made for pitching and you need a big starter or step starter.

 
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