Peel the onions and cut them into small pieces. Heat the butter in a frying pan, add the onions, extinguish with enough water to just cover them and steam until soft.
Put the pork bones in water and make.
Cut the bread rolls into slices.
Rinse and dry the beef, then cut into slices.
Put the beef slices on the onions and steam for 60 minutes. As soon as they are soft, add the roll slices. Add the pork broth and simmer gently for 10 minutes. After that stir. Season well with sugar, salt, freshly ground pepper and caraway seeds. Garnish the onion meat with a little bit of parsley.
It goes well with Thuringian green dumplings.