How do you know how much sugar to add at bottling? If its a stout, how much? A porter? An IPA? And so forth. Is there a way to tell? FG maybe? Because 4 1/2 oz can't be right for all beers. I could be wrong but I have a feeling that I'm not.
it all depends on style and carbonation level. do some searching on carb level and i am sure you will find something to help, i have seen some websites that will help with it but its to early in the morning for my brain to work to remember them right now. lol