Lasagna Bolognese - Pasta Mia

Ingredients

• 2 ounces diced pancetta, finely chopped
• 1 medium Spanish onion or yellow onion, finely chopped
• 1 rib celery, finely chopped
• 1 carrot, finely chopped
• 4 tablespoons unsalted butter
• 11 ounces ground beef
• 4 ounces ground pork
• 4 ounces ground Italian sausage
• 1 clove, freshly ground
• Dash freshly ground cinnamon
• 1 teaspoon freshly ground black pepper
• 2 pounds tomatoes , peeled and chopped, or 1 (28-ounce) can whole peeled tomatoes
• 1 cup whole milk
• 1/2 teaspoon sea salt
• 2 cups whole milk
• 1/4 cup unsalted butter
• 1/4 cup all-purpose flour
• About 16 sheets lasagna noodles, enough to make 4 layers in a 13 x 9-inch baking pan with the noodles overlapping each other a little bit
• 1 cup freshly grated Parmesan cheese