Beef and Pork Italian Chili

Name: Beef and Pork Italian Chili
Ingredients: 2 tablespoons EVOO; 1 1/2 pounds coarsely ground beef sirloin; 1 pound ground pork; 2 tablespoons chili powder, such as Gebhardt's, or 1 tablespoon ground red chili pepper; Salt and coarse pepper or peppercorn blend; 1 carrot, peeled and chopped; 2 ribs celery, chopped; 1 onion, chopped; 3 to 4 cloves garlic, finely chopped; 2 tablespoons minced rosemary; 1 large bay leaf; Pinch ground cloves; 2 tablespoons tomato paste; 2 cups beef stock; One 15-ounce can diced tomatoes; 1 cup passata or tomato sauce; 3 cups chicken stock; 1 cup quick-cooking polenta; 2 tablespoons butter; 1/2 cup (a couple handfuls) grated pecorino cheese