petree3
Well-Known Member
Quick question: could you derive og of a commercial beer by measuring fg and using the alcohol percentage printed on the label? What would this formula look like?
Determining OG of commercial beers.
- Thread starter petree3
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slarkin712
Well-Known Member
ABV = (OG - FG)*131
Therefore:
OG = ABV/131 + FG
Example:
ABV = 8.5%
FG = 1.010
OG = 8.5/131 + 1.010 = 1.075
Therefore:
OG = ABV/131 + FG
Example:
ABV = 8.5%
FG = 1.010
OG = 8.5/131 + 1.010 = 1.075
Just make sure you thoroughly degass the beer before measuring the FG
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