3 cups water1 1/2 cups uncooked white rice1 tablespoon butter1 tablespoon olive oil1 tablespoon olive oil1 small onion, chopped2 cloves garlic, minced2 (5 ounce) cans tuna, drained3/4 cup heavy cream3 tablespoons ketchup1 teaspoon hot pepper saucesalt and pepper to taste1/2 cup sliced black olives1/2 cup shredded Cheddar cheese