The Sidecar is a classic cocktail made with cognac, orange liqueur, and lemon juice. Both Harry's New York Bar in Paris and the Buck's Club in London claim to be its birthplace. The most popular legend says it was named after a regular customer—an American army captain—who frequently arrived at the bar in the sidecar of a motorcycle. The drink is an evolution of the older 'Brandy Daisy' and is famous for its sugared rim, which provides a sweet contrast to the tart lemon juice. It belongs to the 'Sour' family of cocktails, following the basic formula of base spirit, citrus, and sweetener. During the 1920s, it became one of the most fashionable drinks in the world, symbolizing the luxury and speed of the early 20th-century lifestyle.