For the potato dumplings boil the potatoes in steam, peel while still hot and press through the potato press, let cool.
Put them on the kitchen board sprinkled with flour, knead with egg, semolina, oil, flour and salt to a dough. Form the dough into a roll, separate pieces, form dumplings with your hands.
Put them in boiling salted water and cook until they float on the surface (about 10 minutes, depending on their size).