"Nonalcoholic" beverages still contain some alcohol, because it's
difficult and prohibitively expensive to get every single bit of it
out. In order to be called nonalcoholic under federal laws, a beverage
can contain up to half a percent of alcohol by volume. (Something with
no alcohol at all is called alcohol-free.) So people who are forbidden
to drink alcohol, like devout Muslims, can't partake in so-called
nonalcoholic beer and wine. Nor can people under the age of 21,
according to the law. It takes about 10 nonalcoholic malt beverages to
equal the alcohol in one American-style lager, says George Reisch, a
veteran brewer with Anheuser-Busch and the former brewmaster of
O'Doul's. http://www.chow.com/stories/10519