The negroni is a classic Italian cocktail made with gin, Campari, and vermouth. Campari, a deep red liqueur with a slightly bitter orange taste, is what gives the cocktail its signature color and flavor. It also gets a hint of sweetness from the vermouth. The drink is said to have originated in 1919 in Florence, Italy, when Count Negroni ordered an Americano (Campari, vermouth, soda water) with gin instead of soda water, and the rest is history!