Negroni

Up there in the Pantheon of Classics alongside the Martini and the Manhattan is the Negroni. Said to have been invented in Florence by Italian Count Camillo Negroni whilst imbibing at Bar Casoni in Florence in the early 20th Century. Legend goes he asked the bartender to strengthen his favorite cocktail, the Americano, by replacing the soda water with gin. The bartender also replaced the typical lemon peel with an orange peel delivering an easy to make boozy and refreshing classic.

Try switching the Campari for Aperol if you want to tamp down the bitterness.