Estimating the ABV based on lbs of extract... - Home Brew Forums

 Home Brew Forums > Estimating the ABV based on lbs of extract...

07-31-2009, 04:25 AM   #1
BrewOnBoard
Recipes

Dec 2008
Posts: 202
Liked 7 Times on 5 Posts

I've been shopping around for beer recipe kits and some companies (AHS's commercial beer clones for example) don't put the expected ABV of the finished product. They don't give you the whole recipe but the do list the number of lbs of extract and steeping grains.

Is there a way to figure the ABV of the beer based on only the number of lbs of extract and steeping grains?

BrewOnBoard

07-31-2009, 04:54 AM   #2
z987k

Recipes

Feb 2007
Anchorage
Posts: 3,518
Liked 30 Times on 28 Posts

yes, 1 lb of LME gives you 37 gravity points so 2lbs gives you 72.
Add up the GP and divide by the number of gallons.

5 gallons with 7lbs LME: 37 * 7 = 259 / 5 = 51.8 = 1.052
Then you need to figure out your FG. 75% Attenuation is somewhat common so .25 * 52 = 13 = 1.013 FG.
Now 1.052 - 1.013 * 131 = 5.1% ABV.