LEEK SOUP

Cut up two onions and fry them till they are brown; you need not use butter, clarified fat will do very well.
Clean your leeks, washing them well; cut them in pieces and fry them also; add any other vegetables that you
have, two medium−sized potatoes, pepper, salt, and a little water. Let all simmer for three hours, and pass it
through a fine sieve. Let there be more leeks than other vegetables, so that their flavor predominates.