Twelve Mile Limit

White rum, rye, brandy, grenadine, and lemon — named for the 1930 twelve-mile maritime enforcement boundary the US negotiated to stop rum runners.

The Twelve Mile Limit is a Prohibition-era cocktail whose name references one of the most commercially significant maritime boundaries in American legal history. The United States' territorial waters extended three nautical miles from shore at the time of Prohibition's enactment in 1920, meaning that ships beyond this boundary could legally carry and sell alcohol beyond American jurisdiction. Rum runners — the bootleggers who supplied American speakeasies with Caribbean spirits — operated fleets of fast boats that loaded rum from ships anchored at the three-mile limit and raced it to shore. In 1930, responding to this systematic circumvention, the United States negotiated treaties with several Caribbean nations extending the enforcement boundary to twelve nautical miles, producing what newspapers called the twelve-mile limit. The cocktail named for this boundary — white rum, rye whiskey, brandy, grenadine, and fresh lemon juice — appeared in bartending guides of the early 1930s as a multi-spirit sour whose combination of three spirit categories (rum, whiskey, and brandy) in a single glass reflected both the era's experimental approach to cocktail construction and the specific spirits most associated with Prohibition-era bootlegging. The simultaneous presence of rum (Caribbean), rye (American), and brandy (European) in one glass reads as a catalog of the most commercially significant contraband spirits of the era.