Mix the minced meat with onions, egg and breadcrumbs, season with salt and pepper and form small dumplings out of the meat dough.
Bring the water with the bay leaves, the allspice, a little salt and the onion wedges to the boil and add the dumplings. Simmer for 15 minutes, keep the dumplings warm and save the broth.
Heat the fat, dust with flour and add 1 liter of stock while stirring constantly with the whisk. Bring to the boil, then simmer on the lowest heat for 10 minutes. Season to taste with vinegar, sugar, salt and pepper. Finally stir in an egg and bring to the boil again briefly. Pour in the dumplings and let them steep.
Serve with the potatoes.
Especially good for children.
If you like, you can refine the sauce with capers.