Soak rolls in water. Peel and finely dice onions. Knead the minced, squeezed roll, eggs, onions, mustard and chives with the dough hooks of the hand mixer. Strongly season with salt, pepper and paprika. Form approx. 28 balls from the minced mass with wet hands.
Heat oil in 2 portions in a pan and fry 14 balls one after the other at medium heat for about 8 minutes, turning them over. In the meantime, clean and wash the tomatoes. Dice cheese. Then place olives, tomatoes, cucumber or sheep's cheese on the meatballs with wooden skewers (or flags). Serve with ketchup and bread by the meter
With 8 people: