Three Meat Lasagna

INGREDIENTS

• 1 package no-boil lasagna sheets
• 1 cup mozzarella cheese, shredded
• 1/2 cup Parmesan cheese, shredded
• Bechamel
• 4 tablespoons unsalted butter
• 4 tablespoons flour
• 2 2/3 cups milk
• Salt and freshly ground pepper to taste
• Freshly grated nutmeg to taste
• Ragu
• 3 tbsp olive oil
• 4 oz pancetta, finely chopped
• 1 onion, chopped
• 2 celery stalks, chopped
• 1 small carrot, chopped
• 4 ounces ground veal
• 4 ounces ground pork
• 8 ounces ground beef
• 2/3 cup red wine
• 1 1/2 cups chicken stock
• 2 cups milk
• 32 oz canned plum tomatoes, roughly crushed
• Salt and freshly ground black pepper to taste