A bijou is a mixed alcoholic drink composed of gin, vermouth, and chartreuse. Bijou means “jewel” in French. It is said to have been invented by Harry Johnson.[citation needed] This cocktail is called Bijou because it combines the colors of three jewels: gin for diamond, vermouth for ruby, and chartreuse for emerald. An original-style Bijou is made stirred with ice as Harry Johnson’s 1900 “New and Improved Bartender Manual” states “mix well with a spoon and serve.” This recipe is also one of the oldest in the manual dating back to 1890s.
Cocktail glass
Stir in mixing glass with ice and strain.
Source: Wikipedia