1 fresh strawberry, sliced, plus another for serving
1 lime, quartered
1 teaspoons turbinado sugar
2 ounces grapefruit juice
1-ounce rum
1-ounce club soda
Grapefruit wedge, for serving
In a short glass, muddle mint, strawberry, half of the lime and sugar to release all their juices. Squeeze the juice from a quarter of the lime into the glass.
Pour in grapefruit juice, rum and club soda. Stir and top with a few ice cubes. Add a fresh mint sprig to the glass. Garnish the rim with a strawberry and grapefruit wedge to serve.