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Old 09-14-2009, 12:38 AM   #1
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Default Why so much banana in my Saison?

So I brewed the New Belgium Farmhouse Style Saison from BYO's 150 clones a few weeks ago, moved it to the keg, and everything tastes fine apart from the very heavy banana flavors coming through.

I used 3724 for my yeast, and fermented at about 85 degrees. I thought that yeast was designed to like high temperatures, so why did it produce so many esters?

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Old 09-14-2009, 12:49 AM   #2
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Did you start the fermentation at 85 or lower and then ramp it up?

I just brewed one with the same yeast and I have no banana flavor. I believe this is an indication of hot temperatures at the beginning of fermentation. I started mine at ~68, then let it ramp up to 85 over a week or so.

You definitely need the 85 temps to get that yeast to finish the job.

-Steve

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Old 09-14-2009, 12:51 AM   #3
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No I didn't start it lower, I suppose that probably would have been a good idea, wouldn't it? :P

I'll bet your right, thanks for the quick response.

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Old 09-14-2009, 12:53 AM   #4
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No problem.

I conducted my fermentation according to Jamil's advice in both The Jamil Show and Brewing Classic Styles. I think it worked very well, except that I didn't expect 3724 to take so long to ferment.

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Old 09-14-2009, 12:55 AM   #5
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I know what you mean, my bubbling (i know it's not a proper indicator) went for about 10 days, finally it slowed, and it was about 1.015, xferred to secondary and it started another slower fermentation that lasted about another 10 days, and dropped it down to 1.008

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Old 09-14-2009, 12:56 AM   #6
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Yeah, I'm no expert on that yeast, but I think the high temp from the beginning would favor those bananas. Starting it lower, and ramping it up to finish would be the key for the full rich flavor of that yeast.

I bet you'll still have great flavor with a little time!

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Old 09-14-2009, 12:58 AM   #7
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Quote:
Originally Posted by size View Post
I know what you mean, my bubbling (i know it's not a proper indicator) went for about 10 days, finally it slowed, and it was about 1.015, xferred to secondary and it started another slower fermentation that lasted about another 10 days, and dropped it down to 1.008
You know, Wyeast's website says it often stalls out at 1.030 or so after a quick start. That's usually when brewers ramp up the temp, if I remember correctly.
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Old 09-14-2009, 12:59 AM   #8
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Quote:
Originally Posted by YooperBrew View Post
You know, Wyeast's website says it often stalls out at 1.030 or so after a quick start. That's usually when brewers ramp up the temp, if I remember correctly.
1.035, and that's exactly what happened to me. They call the yeast notorious for doing this.

Hmph.

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Old 09-14-2009, 06:01 PM   #9
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Quote:
Originally Posted by YooperBrew View Post
You know, Wyeast's website says it often stalls out at 1.030 or so after a quick start. That's usually when brewers ramp up the temp, if I remember correctly.
With mine, I planned a ramp up with a heating pad, but never got the chance to do it. The ramp happened, but faster than I expected and it was self-imposed. I pitched at 70 degrees. Room temperature stayed at 65-70 degrees. By the end of the second day the wort temperature was up to 80 with no outside influence. From there I used the heating pad to keep the temperature in the 85-degree range for two months.

Went from 1.071 to 1.006 for 8.5 ABV. Dry, fruity, some pepper, but no over powering banana that I could detect.

I think the key to not getting stuck is don’t let the temperature fluctuate too much. Once it raises don't let it naturally drop. Keep it high until it’s finished and had time to clean up.
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Old 09-14-2009, 06:24 PM   #10
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To add, the temperature outside of the fermenter is usually a few degrees lower than within, if your ambient temps were in the mid 80's your fermentation taking place in the fermenter may have been a bit warmer lending to the estery profile.

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