For the bread dumplings, whisk milk with eggs and salt and pour over the bread cubes, mix and let stand a little.
Peel the onion, chop it and roast it lightly in the oil and add it with the parsley to the bread mixture, add flour and mix well.
Bring water to boil in a large pot with salt, form dumplings with wet hands and put them into the boiling water, let them steep for about 10 minutes. Remove with a sieve ladle.