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Old 05-26-2010, 02:04 AM   #1
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Default Higher gravity readings than expected

I recently brewed for the second time ever - I somewhat closely followed the Advantageous Weizenbock recipe on the northern brewer website. I was looking for something like Aventinus that I could do with extract. I pretty much followed the recipe but I wanted to brew closer to 6 gallons since it was such a long fermentation (I wanted to have less airspace in the carboy).

The recipe is for 5 gallons:

.5 lbs CaraAroma
6 lbs Munich Malt syrup (60 minutes) (I actually used 8 lbs)
6 lbs Wheat malt syrup (15 minutes) I actually used 7.5 lbs)
1 oz Perle (60 minutes)
1 oz Hersbrucker (15 minutes) (I used Hallertau)

The recipe called for wyeast 3638 Bavarian wheat but I used 3038 Weihenstephan Weizen. I squashed the bag early saturday morning but I got no action even into the afternoon. I could not brew it later in the day so it would have to wait until Sunday. By the time I got around to brewing and pitching the yeast, it was about 30 hours after I smashed the pack. It was very swollen by the time I pitched it. I did not get any signs of fermentation for the first 24 hours but then it started bubbling like a jacuzzi.

The original gravity was supposed to be 1.084 per the recipe, mine was 1.152. It has been in the primary fermenter now at 66 degrees and today - 10 days into fermentation, the gravity is 1.035. I used some online calculators and according to them it is 15.65% alcohol.

I'm all for strong beer - this should end up around 8% if it is anything like Aventinus. I will rack it to secondary around the end of this week and there it will sit for another 2 months.

My questions is - should I expect it to drop more gravity and get more alcohol? If so, wow!

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Old 05-26-2010, 02:38 AM   #2
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Well, your OG reading is incorrect. Maybe the top up water and extract didn't mix well, and you got a heavier reading or something like that.

15.5 pounds of LME is alot, but your OG for 6 gallons is more like 1.093. If the gravity is now 1.035, it's probably finishing up. I would expect it to finish around 1.023-1.025 or so (70-72% attenuation). That's still a darn big beer, and may be pretty sweet if you didn't increase the hops when you increased the malt but it'll be more like 8.5-9% ABV when done if the yeast can take it. Most ale yeast strains peter out by 9% ABV or so.

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Old 05-26-2010, 02:44 AM   #3
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Quote:
Originally Posted by YooperBrew View Post
Well, your OG reading is incorrect. Maybe the top up water and extract didn't mix well, and you got a heavier reading or something like that.

15.5 pounds of LME is alot, but your OG for 6 gallons is more like 1.093. If the gravity is now 1.035, it's probably finishing up. I would expect it to finish around 1.023-1.025 or so (70-72% attenuation). That's still a darn big beer, and may be pretty sweet if you didn't increase the hops when you increased the malt but it'll be more like 8.5-9% ABV when done if the yeast can take it. Most ale yeast strains peter out by 9% ABV or so.
Just what I was thinking, but I'm too lazy to calculate it out.

Also, if it says 5 gallons then it likely means after everything is said and done. 6 gallons after the boil, 5.5 gal into the fermenter, and 5 into a keg. No need to mess with it.
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Old 05-26-2010, 05:14 PM   #4
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Default Sort of makes sense

I used the beer calculator http://beercalculus.hopville.com/recipe

And came up with an og of 1.097 to 1.113 and an fg of 1.024 to 1.029

This would put it at 10.8% ABV.

Pretty strong stuff, hope it tastes good. I guess I'll find out around late August. This has a 2 month secondary fermentation.

Thanks for the help.

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Old 09-08-2012, 01:15 PM   #5
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Default So?

How did it turn out? I'm still a month away from bottling mine...

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Old 09-08-2012, 08:37 PM   #6
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It was a while ago but it was pretty good. Not quite aventinus good but good none the less.

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