Lightly sauté the finely chopped onion and garlic in a skillet. Add them to the bread. Add the egg, black pepper, paprika and flour and stir when adding the milk until you get a mixture suitable for shaping meatballs. Shape slightly elongated and flat meatballs.
Fry the meatballs in highly heated oil. Serve the soup hot and drop in the meatballs and chopped onion just before serving. Hope you like it and find it delicious :)