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Old 09-22-2005, 01:21 AM   #1
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Default Specific gravity/alcohol content

I've noticed that people on here often mention brews with an OG of 1060 or more, and FG of 1010-1020.
According to the little brewing book I've got, a rough estimate of alcohol content (%) is (OG-FG)x.14.
Using this formula, and allowing for priming as well, some of the brews people are making would have >8% alcohol! Surely that can't be right...

My brews generally have an OG of 1048 (the last three have been exactly that, by coincidence), and FG of 1010-1015. This gives alcohol contents of 5% or just under, according to the above formula.

Any comments?
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Old 09-22-2005, 02:59 AM   #2
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Check this brew ....

http://www.homebrewersupply.com/PDF/DoppelBock%20Recipe%20list.pdf

OG1.116 FG1.016
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Old 09-22-2005, 03:08 AM   #3
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Formulas suck (being an engineer I've come to realize this)

Try http://www.fortunecity.com/boozers/samsplace/24/beercalc.htm#
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Primary - Grand Cru
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Bottled - Strawberry Honey Wheat, Slow Elk Oatmeal Stout clone, Cottage Coffee Stout
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Old 09-22-2005, 03:09 AM   #4
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Quote:
Originally Posted by joeyuwp
Formulas suck (being an engineer I've come to realize this)

Try http://www.fortunecity.com/boozers/samsplace/24/beercalc.htm#
Whoops, I mean formulae
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"Beer...the cause of and solution to all of life's problems" - Homer J. Simpson

Primary - Grand Cru
Secondary #1 - Cyser
Secondary #2 - Empty
Bottled - Strawberry Honey Wheat, Slow Elk Oatmeal Stout clone, Cottage Coffee Stout
Forthcoming - Unknown
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Old 09-22-2005, 03:14 AM   #5
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Check out this site: http://byo.com/feature/1315.html

I've set up my own spreadsheets to use .129 as the factor for calculating ABV. (OG-FG) x .129 = ABV
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Drinking from Keg: Ordinary Bitter, Kolsch

Drinking bottled: Brown Autumn Wee Heavy
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Next up: Hefe Weizen
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