Pastitsio with homemade bchamel sauce recipe

Ingredients

• 2 tablespoon olive oil
• 1 onion, finely chopped
• 1 kilogram beef mince
• 1 1/2 teaspoon cinnamon
• 1/2 teaspoon allspice
• 1 bay leaf
• 2/3 cup white wine
• 2 400g can diced tomatoes
• 500 gram macaroni pasta
• Bechamel
• 40 gram butter
• 4 egg whites, lightly whisked
• 60 gram butter
• 1/4 cup plain flour
• 3 cup milk
• 4 egg yolks
• 3/4 cup grated cheese