Tomato and Watermelon Salad

INGREDIENTS

• Red Wine Vinaigrette
• 1/4 cup red wine vinegar
• 1 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1/2 cup extra-virgin olive oil
• Salad
• 1 small cucumber, peeled
• 1/2 small red onion
• 3 heirloom tomatoes (about 12 ounces total), cut into bite-size chunks
• 3 1/2 cups peeled seeded bite-size watermelon chunks
• 1 red bell pepper, cut into bite-size chunks
• 7 ounces French feta cheese, cut into 1/2-inch cubes (see note)
• 1 cup fresh mint leaves, thinly sliced