The 19th-century Italian cocktail the Milano-Torino consisted of bitter Campari and Martini sweet vermouth. It is said that American travelers preferred their apéritifs with soda water, so the Milano-Torino with soda became known as the Americano.
- 1 1⁄2 oz. Campari
- 1 1⁄2 oz. sweet vermouth
- 2 oz. soda water
Stir Campari and vermouth in a cocktail shaker filled with ice; strain into a highball glass filled with ice. Top with soda and stir; garnish with orange twist.