For the vegetable soup, finely dice the celery, peel the potatoes and cut into cubes and boil both with the beans in salted water until soft, add a few stalks of Maggi herb.
Take out the Maggikraut. Whisk flour in a little water and add to the soup while stirring, let it boil briefly, add a piece of butter and let it melt, stir.
Serve with fresh parsley.