Pimm's is a renowned English brand of gin-based fruit cup, though it is often considered a liqueur. Its most famous product, Pimm's No. 1 Cup, was first created by James Pimm in London in the 1820s. He initially offered it as a tonic to aid in the digestion of oysters at his oyster bar, serving it in a small tankard, which is where the "cup" in its name originates. The original recipe, a closely guarded secret, is a blend of gin with a specific mix of herbs, spices, and fruit extracts.

While other "cups" based on different spirits like Scotch, brandy, and rum were introduced over time, the gin-based No. 1 remains the quintessential and most popular version. Pimm's is famously associated with the British summer and major social and sporting events, particularly the Wimbledon tennis tournament, where it is a staple beverage.

The most traditional way to serve Pimm's is in a cocktail known as a Pimm's Cup. This refreshing highball is made by mixing Pimm's No. 1 with carbonated lemonade—the British kind, which is similar to lemon-lime soda—and a generous amount of fresh fruit and garnishes. The classic additions include slices of cucumber, orange, lemon, and strawberries, along with a sprig of mint. The result is a light, fruity, and subtly spicy drink that is perfect for a warm day.