Finely chopped onion fry in sunflower oil, add salt and pepper. The fish is cut into small pieces, place in a large saucepan, pour with onion mixture, add nutmeg and 3 tablespoons water, capped with a close fitting lid and cook in low oven for half an hour. Egg mix with flour, lemon juice and 1 tbsp fish broth, fish pour and bake another 10 minutes.