Is my imperial stout done fermenting - Home Brew Forums

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Old 03-21-2012, 03:03 AM   #1
Dec 2011
Laguna Beach, CA
Posts: 316
Liked 13 Times on 7 Posts

OG 1.109
4weeks later SG 1.029

Used wyeast1728 attenuation 69-74%

Looks to me like it's finished out .26X109=1.02834

I usually know this since I buy kits and it tells me but this time I altered the recipe so I wasn't sure. Hope it's ready to rack since I need the bucket for a brew this weekend.

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Old 03-21-2012, 03:14 AM   #2
Oct 2010
Portland, ME
Posts: 682
Liked 15 Times on 13 Posts

People usually don't advocate racking until the specific gravity is stable for at least three days.

It looks like the apparent attenuation is around 73.3% and the abv is around 10.5%, but that yeast can go a little higher.

I'd go by the gravity readings and not the numbers. Just my 2 cents.

I really like the 1728 by the way, I used it on a wee heavy and fermented at the very low end of the recommended temperature range. It gave a nice smoke flavor to the brew with out using any peated or smoked malts. It was kind of neat.

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Old 03-21-2012, 05:19 PM   #3
Jan 2009
Corvallis, OR
Posts: 456
Liked 17 Times on 17 Posts

Take a gravity reading 3 days apart, just because wyeast lists its attenuation range of 63-74% doesn't mean it can't attenuate higher, there are many factors that contribute to attenuation.

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Old 03-21-2012, 05:42 PM   #4
Feb 2011
Clemson, SC
Posts: 1,222
Liked 121 Times on 73 Posts

There's almost no reason to rush an Imperial Stout. I would check the gravity a week from now, and if it's the same then feel free to bottle/bulk age in secondary.

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Old 03-21-2012, 06:13 PM   #5
chuckstout's Avatar
Feb 2012
, Wa
Posts: 896
Liked 219 Times on 146 Posts

You could just buy another bucket, gives you more reason to brew more often, brew on

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