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Old 04-10-2009, 11:34 PM   #1
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Default Fermenation time for big beers

Hello,
My third batch has now been in the primary just shy of two weeks. I'm making the AHS Cannon Ball stout (extract recipe), which ended up with an OG of 1.115. I pitched two tubes of WLP007 and also added a capsule of BrewVint yeast nutrient to give the yeast a good running start. I do need to thank everyone here for the blow-off tube advice. In well under 24 hours I had a lot of foam going through my tube, a good bit leaking out around the edge of my airlock stopper, and the top of my ale pail was still bulging upwards a bit! It's settled down a good bit now, though when I checked the gravity yesterday, it read 1.040.
I knew going in that I'd have to be really patient with this one and that there was no way it would come out of the primary in anything less than 2 weeks. With the gravity still this high, I figured I wouldn't even bother checking it again for another week. My question is, how long should I expect the fermentation to take? I did give the bucket a bit of a swirl to encourage the yeast to keep moving. My fermentation temps have been between 64deg and 71deg. Should I be at all surprised that the gravity is still that high 2 weeks in?

Thanks,
JB

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Old 04-10-2009, 11:47 PM   #2
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Not really. That's a HUGE beer, and it will take time, if it's not already done. If you see no more movement in a week, try to rack it to rouse the yeast. If that does nothing, then you may have maxed out your yeast.

You're already pushing 10% ABV, there, and 007 can start pooping out around that point.


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Old 04-11-2009, 12:06 AM   #3
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1.115 is leaning to imperial stout status. I would suggest 3-4 weeks in primary, 3-4 weeks in secondary and 6-8 weeks in a bottle. A beer that big takes a while to ferment, age and mellow.

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Old 04-11-2009, 07:18 PM   #4
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I have been looking at this same kit. If wlp007 cant handle this big of a beer ( I think thats what Texlaw is saying) what yeast would you all recomend.
Thanks
Kyle
Sorry not trying to hijack your thread.

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Old 04-16-2009, 07:55 PM   #5
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Hello all.
Well, it's been a week and there's been no movement in my SG. Should I go ahead and rack it? I was under the impression that very little fermentation will actually happen in the secondary. Also, I was thinking that a good bit of the sediment at the bottom is yeast, which means that racking would essentially reduce the number of yeast present. Would I be better of sanitizing my brewing spoon and trying to stir the wort up a bit (obviously while limiting the amount of splashing and aeration as much as possible)?

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Old 04-16-2009, 08:05 PM   #6
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Quote:
Originally Posted by crazyboy View Post
1.115 is leaning to imperial stout status. I would suggest 3-4 weeks in primary, 3-4 weeks in secondary and 6-8 weeks in a bottle. A beer that big takes a while to ferment, age and mellow.
Leaning? 1.115 is leaning towards Emperor Stout status.
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Old 04-16-2009, 08:11 PM   #7
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I'd go with stirring rather than racking. Secondary won't drop the FG. You'd do that after the final FG was more or less attained.

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Old 04-16-2009, 08:20 PM   #8
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I should have added that you did underpitch for a beer this size. 2 vials is really not enough for a beer like that. You might reach normal attenuation on this beer, but I wouldn't expect it to go beyond.

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Old 04-16-2009, 09:38 PM   #9
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Would it be too late to get another vial and pitch it as well? With the wort already at around 10% alcohol, would another vial of yeast even really have a good chance to get started? I'll trying stirring it up a bit later on tonight.

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Old 04-16-2009, 09:45 PM   #10
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One other thought: I'm fermenting this in an ale pail, and I'm getting my hydrometer samples from the spigot at the bottom of the bucket, which probably means my gravities may be a bit high, especially for the OG. But I would assume that wouldn't be enough to account for this large a gravity late in the fermentation.

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