- 2 ounces gin, such as Plymouth Gin
- 1 ounce bitter orange liqueur, such as Aperol
- Grapefruit soda, for topping, such as San Pellegrino Pompelmo soda
- Grapefruit peel, for garnish
Fill a highball glass with ice to chill, then discard the ice.
Pour the gin and liqueur into the glass. Top with soda and garnish with the grapefruit peel.