Traditional Italian Bolognese Sauce - Ragu' alla Bolognese

Name: Traditional Italian Bolognese Sauce - Ragu' alla Bolognese
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: European, Italian, Mediterranean
Ingredients: 1 medium onion; 1 large carrot; 1 large celery stalk; 2 tablespoons olive oil; 1 lb ground beef; 1 lb ground pork; 2 cans of 28 oz (total 56 oz) crushed tomatoes (I used San Marzano); 1.5 cups white wine; 1 rosemary sprig; 2 whole cloves (optional); salt and pepper to taste