There's a thread a month asking this question...
Also the rule of thumb is 3 weeks at 70 degrees for a normal grav 12 ounce bottle....to carb and condition....It takes longer for the yeasties to convert the larger volume in the bigger bottles to enough co2 in the headspace to be reabsorbed back into the solution...A ration I don't know how much...
Big Kahuna gives a good explanation here...
Originally Posted by BigKahuna
Simple. It's the ration of contact area just like in a keg. The c02 will need to pressurize the head space (Which takes LESS TIME) in a bigger bottle (More Yeast and sugar, roughly the same head space) but then it has to force that c02 into solution through the same contact area...thus it takes longer.
The 3 weeks at 70 degrees
, that we recommend is the minimum
time it takes for average gravity beers to carbonate and condition. Higher grav beers take longer.