FISH SOUP

Skin and fillet the fish. Put the fish bones, skin, and any other fish trimmings into an earthenware pot with the stock or water and the salt; bring to the boil and skim well, add the bay leaf, the onion, and celery cut into small pieces; simmer for one and a half hours; then strain. Melt the butter in the pan, add the flour, stir till smooth, then add the milk; allow this to boil for four minutes, add the soup, the parsley, and the fish cut into small pieces; season nicely, simmer for fifteen minutes, and serve hot.