Ask Mr. Wizard
Over-Carbonating My Bottles
Talley Pollard - Little Switzerland, North Carolina asks,
I have been having problems with over-carbonation in my bottles. I give my batches plenty of time to finish the secondary and check the hydrometer reading to be sure the fermentation is done. Then i add 5 oz. (0.14 kg) of corn sugar and wait about two weeks before sampling the first bottle. It is almost always over-carbonated and nearly all foam. What am I doing wrong? My brewery is at 4,000 feet, could my altitude be the problem?
Little Switzerland, North Carolina
I think your problem is too much sugar added for bottle conditioning. But before I jump into this topic, I want to focus on the state of beer when it is opened.