Sift the flour, make a well in the middle, pour oil and egg into it, and add salt. Add the lukewarm water and mix the ingredients. Knead the dough until it is smooth and elastic and does not stick to the hands and pot. From the dough make a loaf, coat it with oil and let it rest for at least 30 minutes. Cover with transparent foil or a napkin
Roll out the dough on a floured tablecloth, coat with oil, and stretch thinly. Cut the ticker edges and coat with filling. Roll thin ”dumplings” (about 3 cm in diameter). Press with finger at a distance of 3 cm and cut.
Boil the soup stock, season it, mix the sour cream and flour separately and pour it into the soup to thicken it. Boil well and stir the ”dumplings” into the soup. Sprinkle chopped chives or chopped parsley before serving.