4 large mint leaves
1 tablespoon superfine sugar
4 ounces seedless watermelon, cut into 1/2-inch cubes (about 3/4 cup), plus a small wedge for garnish
2 ounces white rum
1/2 cup ice cubes
1. In a heavy large glass, combine mint, lime, and sugar. Using a muddler, mash together mint and lime until sugar is dissolved. Add watermelon, and muddle until broken down. Stir in rum and ice cubes. Pour into an 8-ounce serving glass and garnish with a watermelon wedge. Serve immediately.