Moscow Mule
The Moscow Mule was invented in 1941 at the Cock 'n' Bull bar in Hollywood, born of a happy collision between a vodka importer and a ginger beer producer. Traditionally served in a copper mug (which keeps it ice cold), it's one of the most refreshing highballs in the cocktail canon. Use a spicy, full-flavored ginger beer — Fever-Tree Spiced or Bundaberg — not ginger ale, and never flat ginger beer.