The negroni is a cocktail, made of equal parts gin, vermouth rosso (red, semi-sweet), and Campari, generally served on the rocks, and commonly garnished with an orange slice or orange peel. It is considered an apéritif. The drink has been documented in Italy since the late 1940s, and became popular in the 1950s, but the origin is uncertain, and early recipes differ somewhat from the modern standard. https://en.wikipedia.org/wiki/Negroni