2 Pound 99% lean ground turkey breast meat 3/4 Cup finely chopped onion]\ 3/4 Cup finely chopped red or green bell pepper 1/2 Cup shredded zucchini (about 1 small) 1/4 Cup Ketchup 2 Clove Garlic, minced 1/2 Teaspoon salt (optional) 1/2 Cup nonfat sour cream