Negroni shakes up cocktails galore, including its namesake invented in the 1920s, so the story goes, when Florentine Count Camillo Negroni asked the barman at Caffè Giacosa to add gin to his Americano. To make it at home: shake equal parts gin, Campari and red Martini. The clientele tends to be 30-and-up and well-heeled, and at weekends DJs get them dancing by 11pm or so.