Soak the buns. Peel onions, dice one very finely. Knead minced meat, squeezed out roll, diced onion and egg. Season with salt, pepper and dried herbs. Form many small balls from it.
Fry for 3-5 minutes in 2 tablespoons of oil while turning. For the soup, roughly dice the remaining onions. Peel and chop the garlic. Heat 2 tablespoons of oil in a large pot. Fry the garlic and onions in it.
Add canned tomatoes and stock, simmer for about 5 minutes. Cut bread into thin slices. Grate parmesan and sprinkle over it. Roast briefly under the hot grill. Season soup with salt, pepper, vinegar and dried herbs.
Puree with the cutting stick, heat the dumplings in it. Add the parmesan ciabatta.