Cucumber-Watermelon Salad

6 cups cubed seeded watermelon

4 cups cubed English cucumber

1 teaspoon salt

1 tablespoon white sugar

½ cup balsamic vinegar

Place the watermelon and cucumber cubes in a large bowl, and gently toss with the salt and sugar. Drizzle with balsamic vinegar and toss to coat. Refrigerate for 15 minutes, then gently toss one last time before serving.