Summer Dinner Recipe: Turkey Koftas with Toasted Pita

Name: Summer Dinner Recipe: Turkey Koftas with Toasted Pita
Ingredients: 1/4 teaspoon coriander seeds; 1/4 teaspoon cumin seeds; 1 pound ground turkey (dark meat preferable); 1/2 cup spring onions (or a mild-tasting onion such as Vidalia), finely diced, divided; 2 tablespoons finely chopped mint; 2 tablespoons finely chopped dill; 1 1/2 teaspoons salt, divided; 1/2 teaspoons freshly ground black pepper, divided; 2 Kirby cucumbers; 1 cup plain Greek yogurt; 3 tablespoons olive oil; 2 medium tomatoes cut into 1/4-inch slices; 4 whole wheat pitas, warmed in an oven or a toaster