See also: Beef soup Münsterländer style
Peel and dice the onions.
In a saucepan, leave out the butter and fry the onions until golden. Extinguish with the clear soup and make 5 min.
Bind the sauce with flour, season with salt, pepper and sugar, season with vinegar sweet and sour.
This sauce is poured over the meat, which is served in the soup plates from which the beef soup has already been eaten.