just started doing homebrew so ive started with the kits first going well but i want to start doing my own , my question is about the og and fg ,do you take the og wen you put everything in fermenting vessel after yeast etc ,and then the fg at the end of fermentation,ive brought a book for beginners but it doesnt put things in simple to understand terms they think you no all terms and abrevations for things :drunk:
original gravity,final gravity
- Thread starter griff98
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og is the original gravity before you put in the yeast at 20c
sg is the specific gravity whenever you take it, I do this often purely for quality control purposes
fg is the final gravity that you bottle or barrel it
sg is the specific gravity whenever you take it, I do this often purely for quality control purposes
fg is the final gravity that you bottle or barrel it
31bb3
Landlord.
take og before pitching yeast the fg to assertain fermenting has finished
Samarith
Regular.
OG is taken before or right after the yeast is pitched, its a measure of the total disolved sugars before fermentation starts.
FG is, as you say, the measure taken after fermentation is over (or mostly over since you do want some carbonation in the beer).
Beer differs from wine in that you don't kill/remove the yeast before bottling/kegging, unless you're force carbonating. FG is a good enough way to express the specific gravity at which you're going to bottle/keg, though I suppose if you were really anal you'd have to call it BG (bottling gravity) or something.
FG is, as you say, the measure taken after fermentation is over (or mostly over since you do want some carbonation in the beer).
Beer differs from wine in that you don't kill/remove the yeast before bottling/kegging, unless you're force carbonating. FG is a good enough way to express the specific gravity at which you're going to bottle/keg, though I suppose if you were really anal you'd have to call it BG (bottling gravity) or something.
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