Ragù Enriched with Chicken Livers (Ragu di Fegato di Pollo)

Ingredients

• 4 cups beef broth
• 2 tbsp. Homemade Tomato Paste
• 1 cup milk
• 3 whole cloves
• 1⁄3 cup extra-virgin olive oil
• 2 tbsp. unsalted butter
• 1 (2-oz.) piece pancetta, finely chopped
• 2 medium carrots, finely chopped
• 2 ribs celery, finely chopped
• 1 medium yellow onion, finely chopped
• 3⁄4 lb. ground beef chuck
• 1⁄4 lb. ground pork shoulder
• Kosher salt
• freshly ground black pepper
• 1 cup dry white wine
• 1⁄8 tsp. freshly grated nutmeg
• 2 chicken livers (about 2 oz.)