Clean, wash, quarter, remove stalk and cut cabbage into strips. Clean, wash and cut leek into rings. Heat butter in a pot. Steam leek and cabbage for about 5 minutes.
Deglaze with broth, add cream, season with salt and nutmeg. Bring to the boil once and stew covered over medium heat for about 10 minutes.
In the meantime crumble Panko finely. Mix in caraway and marjoram. Remove sausage skins. Whisk the egg. Turn sausages one after the other in flour, egg and Panko. Heat the oil in a high pan to 160-170 °C and fry the sausages for about 4 minutes.
Cut the bread in half horizontally and toast until crispy. Wash parsley, shake dry, pluck leaves from the stalks, chop and stir into the cabbage. Serve everything.