-1 / 2 kilo of fish
-Vinegar (or lemon)
Prepare a mayonnaise with one egg yolk and olive oil and set aside.
Boil water with salt or vinegar (or lemon) add some egg whites, at boiling point. When curdles, crumble the whites, which will serve to garnish the soup.
Add gradually the water, salt and vinegar to the mayonnaise, being very careful not to curdle (you must beat all the time).
Place the minced fish in a bowl, pieces of fried bread and the curdled egg whites, and pour the mix of and water over it..
Boil over low heat, stirring constantly with a wooden spoon and serve hot.