Beer is an alcoholic beverage produced by the saccharification of starch and fermentation of the resulting sugar. The starch often comes from malted cereal grains or malted barley.
Tom, the landlord and owner of the Leaky Cauldron, offered Minister for Magic Cornelius Fudge some beer in August of 1993, but he declined, instead requesting a pot of tea.
Butterbeer is a wizarding variation of traditional beer.
Notes and references