A Bijou cocktail is a classic mixed drink that originated in the late 19th century. It is considered a classic due to its long history and timeless recipe. The Bijou is a combination of gin, green chartreuse, vermouth and orange bitters. The ingredients are stirred with ice and strained into a chilled cocktail glass, usually garnished with a lemon twist. This cocktail is believed to have originated in the United States and is named after the French word for ""jewel,"" reflecting the combination of the green and red ingredients, reminiscent of the colors of precious gems. The Bijou is a versatile and well-balanced cocktail, making it a staple of classic cocktail culture.