[Greek] How to cook Baked pasta (pastitsio)

Ingredients

• 2 tbsp olive oil
• 1 onion, finely chopped
• 1 carrot, finely chopped
• 2 garlic cloves, finely chopped
• 2 tbsp tomato paste
• 1 kg minced beef
• 1½ tsp ground allspice
• ½ tsp dried mint
• 400 ml passata (puréed tomatoes)
• 500 g ziti pasta (see Note) or penne
• 40 g butter
• 4 egg whites
• 25 g (½ cup) grated kefalograviera (see Note), plus extra, to sprinkle

• 100 g butter
• 100 g (⅔ cups) plain flour
• 1 L milk, heated
• 4 egg yolks
• ⅛ tsp ground nutmeg
• 35 g (¾ cup) grated kefalograviera (see Note)

Directions