Bolognese lasagna

Ingredients

• 400 g ground beef pulp
• 150 g of fresh sliced ​​bacon
• 200 g of tomato puree
• 1 tablespoon of tomato paste
• 60 g of carrot
• 60 g of celery
• 60 g of golden onion
• 1 glass of wine (red or white)
• 1 glass of whole milk
• meat broth to taste
• 3 tablespoons of extra virgin olive oil
• salt to taste
• pepper to taste
• 400 g of flour
• 250 g of spinach
• 2 eggs
• 500 ml of milk
• 50 g of butter
• 50 g of flour
• nutmeg to taste