Greek Meatball Stuffed Pitas with Simple Tzatziki Sauce

Name: Greek Meatball Stuffed Pitas with Simple Tzatziki Sauce
Ingredients: 1/2 cup grated seedless, English cucumber; 1 cup plain Greek yogurt; 1 clove garlic, finely minced; 1/4 teaspoon salt; Pinch black pepper; 1-2 teaspoons fresh lemon juice; 1/2 cup bread crumbs; 1/3 cup milk; 1/4 cup chopped fresh parsley; 1 egg, lightly beaten; 1 tablespoon dried oregano; 2 cloves garlic, finely minced; 1 teaspoon salt; 1/2 teaspoon black pepper; 1 1/2 pounds ground turkey; 4 whole wheat pita breads; 2 large tomatoes, sliced; 2 cups fresh spinach, arugula or a combination