Bacalhau Espiritual (creamy codfish) - Riberalves

Ingredients

• 1 kg deep-frozen soaked codfish Riberalves
• 2 large carrots
• 3 large onions
• 2 egg yolks
• 2 tablespoons of «crème fraîche»
• 2 carcasses soaked in milk
• 1 l of milk
• 6 tablespoons of wheat flour
• 5 tablespoons of butter
• Olive oil
• salt
• Nutmeg
• Grated Parmesan cheese