Soak the bun in cold water for a few minutes, if it is completely soft, press it out thoroughly. Knead all ingredients well in a bowl with the soft bun until everything is well mixed.
Then shape about 14 meatballs of the same size and place on a baking sheet lined with baking paper. Bake in the oven for about 20 - 30 minutes at 180 ° C (convection) until the desired brown color.