If the answer above is None it means there is no specific mention in the legislation, but you still need to ask local law enforcement before drinking in Germany.
It is prohibited to sell, serve or supply fermented alcohol beverages (beer, wine, cider and sparkling wine) to anyone under 16 years of age. However this age limit drops down to 14 if a minor is accompanied by his parent or legal guardian. It is generally prohibited to serve, sell or supply any beverage containing spirits and foods containing spirits above negligible amounts, to anyone under the age of 18 years. Violation of the Protection of Young Persons Act can be fined up to €50,000.See also: Alcohol laws in GermanySee also: Protection of Young Persons Act (Germany)
You can find more legal details and links here:
Wikipedia Legal Drinking Page