Originally Posted by wisski
ok that's what i figured, but i see some people saying things like "take your og, and subtract your fg, then do some mathematical magic, and you'll get alcohol content." And that just doesn't seem like sound science to me.
okay, as far as that goes, yes...there is a calculation.
the first calculator on this site
does the math when you plug in the hydrometer readings.
as you get more advanced, you might want to check out Beersmith 2.0.
Good price for great software.