Boil the potatoes, let them get lukewarm and mash them. Add the flour, salt and yeast to the potatoes and form a well. Pour the lukewarm, not too hot water into the well and gradually work it into a dough. Shape the dough into a ball, place in a greased bowl and let rise in a warm place for about 1 hour.
Then shape the dough into a loaf of bread (whether round or oblong) and place on a floured baking sheet. Flatten the top a little. Let rise for 20-30 minutes.
Bake the bread in the oven preheated to 200 ° C for 60-75 minutes.