Ingredients

Seedless watermelon 

8 basil leaves, torn, plus more for garnish 

1 teaspoon sugar 

1 tablespoon fresh lime juice 

1 ounce vodka 

3 ounces seltzer 

Preparation

Cut watermelon into 1-inch cubes, and freeze in a single layer for at least 1 hour. Muddle basil leaves with sugar in the bottom of a glass; stir in lime juice and vodka. Add watermelon cubes. Top with seltzer; garnish with basil.