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Old 12-24-2012, 09:50 AM   #1
dinnerstick
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Default 100% brett fermentation, tips

hello everyone. i'm soon to embark on my first ever 100% brett fermentation using brett b from white labs. i am aware that for obvious reasons (big brewer $/€) far less research has gone into brett than sacc, so i'm curious about other homebrewers' experience with the conditions. those with a lot of brett experience, how much does temperature contribute to flavor, and if it exists, where is the magical cutoff (the one around 15 degrees for lager yeasts between clean and sulfur, and 21 or so for some ale yeasts between slightly fruity and downright wacky), and finally what are the characters that change with temp?? my temp controlled fermenter is busy with lagers for the forseeable future. i have a nice cool unheated stairwell, in which i have had success with ale yeasts, starting them in 15/16 degree ambient temp and bringing them inside to 20-21 after a few days. i need to decide whether to BS it with the old carry-the-fermenter-around-the-house technique, or free up some time on the temp control (at the expense of a highly anticipated big bock).
finally, what sort of pitching rate have people had the best success with? i have heard that underpitching relative to sacc is common? cheers to everyone and have a good holiday season drinking heavily malty barley beverages!

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Old 12-25-2012, 12:01 AM   #2
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I don't know I can answer all your questions, but will try to answer some.

Pitching rate: You pitch low when Brett is used as a secondary yeast. The anaerobic conditions stress the yeast and result in the rustic characteristics. As a primary yeast (100% Brett) you want to pitch high; somewhere in the region of lager levels.

Temperature: Brett likes high temps (80s). I've done that yeast in a few brews, some at room temperature, and some in the 80s, and I can't say I've really noticed a difference. Never done a side-by-side, but they seem similar. I think I got a little better attenuation at the higher temp.

Aeration: Lots of aeration. I do a pretty good job shaking. and never notice a problem with any beers. With the Brett beers, I shake a second time at around 12 hours after pitching.

Attenuation: I've had varied results with that yeast (from white labs), ranging from 67% to 80% for similar worts. For the one that went 67%, i used PacMan to finish it off.

Time: My experience is that most fermentation is done in the first week, but it will keep going slowly for several more weeks.

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Old 01-01-2013, 02:22 PM   #3
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thanks calder! i'm surprised there is not more info on this topic. well, i'm brewing now, and i went with a 3L starter and a recent white labs vial. the starter was done in 2 days. it's not a big beer, 1.054, going to ferment without temp control, at room temp, and lots of O2

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Old 01-03-2013, 09:38 AM   #4
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woooow !! i'm pleased. pitched all that healthy brett, gave slightly more O2 than i would normally, let it go at room temp of around 21 degrees, went to bed, next day it almost woke me up it was bubbling so furiously! foaming way up. 24 hours later and the foam has completely dropped, bubbling has basically stopped. haven't checked the gravity but this stuff just absolutely devoured my wort! so much for slow fermentations with 100% brett. i know it's not done yet. i'll be leaving it a couple weeks minimum to finish up

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Old 01-05-2013, 03:30 AM   #5
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Please report back with your results. I'd be interested in the basic recipe too. I want to compare the performance of the yeast for against my experience. As I said before I have found it very variable.

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Old 01-05-2013, 07:19 AM   #6
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Watch all three of the videos here when you have the time. Chad's definitely an authority. http://embracethefunk.com/media/

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Old 01-05-2013, 11:07 AM   #7
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Quote:
Originally Posted by Calder View Post
Please report back with your results. I'd be interested in the basic recipe too. I want to compare the performance of the yeast for against my experience. As I said before I have found it very variable.
will do. at this point, brewed on 1 jan, and it was done bubbling in the blowoff tube by the morning of 3 jan, but i haven't opened it, looked at it, taken a gravity reading or anything and probably won't for another week at least. the recipe is as follows; i was listening to the brewing network and the guys from flat tail (in between being drunk and cracking dick/tit jokes) were describing a dark wheat all-brett beer that i liked the sound of, so i copied their grain bill percentages. the rest i just decided. i want fairly bitter and with a noble hop flavor and aroma. i think theirs was the base for a fruit/spice beer but i can't recall. mine's a 20L batch. malts are all weyermann except chocolate is brewferm belgian, and the color rating of caramunich III is wrong. just under 70% efficiency got me 1.055 OG.
Amt Name Type # %/IBU
2.70 kg Wheat Malt, Dark (15.0 EBC) Grain 1 52.4 %
0.96 kg Munich Malt (15.0 EBC) Grain 2 18.6 %
0.96 kg Munich Malt II (23.0 EBC) Grain 3 18.6 %
0.26 kg Caramunich Malt III (120.0 EBC) Grain 4 5.0 %
0.17 kg Chocolate Malt (800.0 EBC) Grain 5 3.3 %
0.10 kg Oats, Flaked (2.0 EBC) Grain 6 1.9 %
15.00 g Magnum [13.50 %] - Boil 60.0 min Hop 7 29.2 IBUs
20.00 g Tettnang [4.50 %] - Boil 10.0 min Hop 8 2.6 IBUs
30.00 g Tettnang [4.50 %] - Boil 0.0 min Hop 9 0.0 IBUs
Other: 200 g oat husks in the mash (can't get rice hulls).
The 100 g rolled oats were not mashed. They were steeped separately and added to the boil for starch and body.
50 deg 15 min
68 deg 60 min
76 deg 10 min
boil 60 min.
cooled to 24
oxygenated pure O2 for 60 sec
added (decanted) 3L starter from 1 white labs brett b vial.
fermented at ambient room temp around 21-22.
i'll report back when i know more!
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Old 01-05-2013, 11:08 AM   #8
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Quote:
Originally Posted by apratsunrthd View Post
Watch all three of the videos here when you have the time. Chad's definitely an authority. http://embracethefunk.com/media/
cool thanks. just watched a different presentation from him. embrace the geek!
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Old 01-07-2013, 08:18 AM   #9
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day 7, racked to a keg to get it out of the 'brett bucket' that i fermented it in. (don't trust the seal that much and really don't want oxygen). 1.019 giving 65% attenuation. since it's meant to be drunk relatively young (a couple months) i wonder if the brett is going to chug along quickly enough now that it's off the yeast cake (although so much yeast was in suspension and the yeast cake so loose that i carried a lot over), or if i should nudge it on its way with some sacc...

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Old 01-07-2013, 12:40 PM   #10
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i see in one of these talks mr yakobson recommends pitching multiple strains in all-brett beers for better attenuation. might have to try this next time

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