Ask Real Beer
Is there a difference in production methods between kegged beer and its
counterpart. I was told by a friend that there is a secondary fermentation
caused by additional suger in bottled beer to provide the carbonation.
From Beer Dave: The difference between the national brewers (Miller, Bud, Coors etc.)
bottled/canned beers and their draft/kegged beers is that the
bottled and canned beers are sent through a pasteurization process. This
kills any remaining yeast and or bacteria which could destroy the
product's shelf life. Draft beer is not normally pasteurized. The
carbonation of either of these products happens during fermentation and
is controlled at the brewery with CO2 pressure from fermentation through
packaging. Some beers are bottle conditioned. These means that they go
through a secondary fermentation in the bottle and this does have an
effect on the carbonation. This process is practiced by Goose Island,
Deschutes, Fuller's and King & Barnes, to name a few.
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