Watermelon Salad with Feta and Mint

Name: Watermelon Salad with Feta and Mint
Ingredients: 1/3 cup extra-virgin olive oil; 3 tablespoons fresh lemon juice; 2 teaspoons kosher salt; 1 teaspoon Tabasco; 1/2 teaspoon freshly ground black pepper; 1 (8-pound) seedless watermelon, scooped into balls with a melon baller or cut into 1 1/2-inch chunks (10 cups), chilled; 1/2 pound feta cheese, crumbled (2 cups); 1 1/4 cups pitted kalamata olives, coarsely chopped (optional); 1 small sweet onion, cut into 1/2-inch dice; 1 cup coarsely chopped mint leaves