Watermelon and Cucumber Salad

Servings: 4
Total Time: 30 minutes
- 6 cups watermelon, cubed and deseeded
- 4 cups cucumber, cubed
- 1/2 cup balsamic vinegar
- 1 teaspoon salt
Optional:
- 1/2 tablespoon sugar or sugar-substitute
- Mint or basil leaves, chopped
- Feta cheese, crumbled
- Red onions, sliced