Turkey Rosemary Bolognese

Name: Turkey Rosemary Bolognese
Ingredients: 3 tablespoons olive oil; 1 onion, finely chopped; 1 rib celery, finely chopped; 1 carrot, finely chopped; 2 cloves garlic, finely chopped; 1 ¼ teaspoons salt, divided; 2 cups finely chopped cooked turkey meat; 1 tablespoon tomato paste; ¾ cup red wine; 1 28-oz. can crushed tomatoes; 1 sprig rosemary, chopped (about 2 tsp.); Red pepper flakes, optional; Freshly ground black pepper; 1 pound Spaghetti, tagliatelle, or fettuccine; Shaved parmesan, for serving