Mediterranean Meatballs with Tzatziki Sauce

Name: Mediterranean Meatballs with Tzatziki Sauce
Ingredients: 2 pounds ground turkey (I used 1 pound of 6% fat and 1 pound 1% fat); 2 tablespoons olive oil; 1 medium onion, finely chopped; pinch of salt; 1 medium zucchini, grated; 1½ tablespoons capers, chopped; ½ cup sun-dried tomatoes, chopped; 2 slices whole wheat bread (you can also use white bread); ½ cup parsley; 1 egg; 1 large clove garlic, finely chopped; ½ teaspoon kosher salt; ½ teaspoon black pepper; 1 tablespoon worcestershire sauce; ½ cup shredded or grated parmesan cheese; 2 tablespoons finely chopped fresh mint