Codta soak overnight in water. Before cooking, pour 1.2 liters of cold water, add the onion and boil 15 minutes. Creases fish with a fork. The chopped garlic and leeks fried in the oil, add the diced potatoes, pour a little fish broth and boil. Products are creased, add the rest of the broth, fish, pepper, salt and boil. The soup is served very hot. can be prepared with fish fillet.