Americano Cocktail

2 cups ice

1 ½ fluid ounces bitter orange aperitif (such as Campari®)

1 ½ fluid ounces sweet vermouth

3 ounces club soda, or as needed

1 (1 inch) piece orange peel

Add ice to a tall glass. Pour in Campari and vermouth. Stir and top with soda water. Squeeze a twist of orange peel over the drink and drop it in.