ABV ? adding liquor to fermented beer - Home Brew Forums

 Home Brew Forums > ABV ? adding liquor to fermented beer

11-08-2007, 01:15 AM   #1
left field brewer
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So I am thinking of brewing a low alcohol ale, possibly with some maltodextrine and spiking it with infused vodka. But I want to still end up with a fairly reasonable ABV(under 7%) so I need to determine how much that "x" quantity 40% vodka will raise ABV of 5G(or whatever batch size) of "x%" beer to. I could probably figure it out by myself, but I'm not really a math guy. Besides, I know there are a plethora of smarties here who will be glad to display their numerical prowess. I wish I would have been paying attention more in algebra. Damn.

11-08-2007, 01:17 AM   #2
Yuri_Rage
Gritty.

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Why wouldn't you just brew a 6% beer in the first place???
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11-08-2007, 01:19 AM   #3
c.n.budz

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just do the shot of vodka and chase it with the beer
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11-08-2007, 01:20 AM   #4
Ryanh1801

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why would you want to do this?

11-08-2007, 01:22 AM   #5
Yuri_Rage
Gritty.

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I still don't understand why you want to do this, but for the math challenged:

There are 25.3 oz in a fifth of vodka.

40% of 25.3 is 10.12 oz of alcohol.

There are 640 oz in 5 gallons.

10.12 oz divided by (640 + 25.3) is 1.5%.

So, adding a fifth of 80 proof vodka to 5 gallons of beer will increase the ABV by 1.5%.
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11-08-2007, 01:38 AM   #6
left field brewer
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"Infused" vodka. Thanks Yuri, thats what I came up with after thinking for a minute. My initial guess seemed low until I wrote it out. How much do you think I could add before tasting the vodka? I was initially thinking about adding around 3 to 4 cups with less being better. I still want it to taste like a beer but have noticeable added benefits.

11-08-2007, 01:40 AM   #7
RedSun

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Tucson
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Do it an report back. I can't imagine it'll be good, but here's to hoping.
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11-08-2007, 01:42 AM   #8
Yuri_Rage
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Umm...I think you'd be better off infusing the beer rather than trying to flavor it with vodka. Post the flavor you're after, and maybe we can help.
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11-08-2007, 01:44 AM   #9
left field brewer
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Not just flavor. Other added benefits.

11-08-2007, 01:47 AM   #10
PseudoChef

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Just brew a higher O.G. beer, dude.