First of all, knead the dough. Mix salt, sugar, and yeast in a warm water. Wait 15 minutes and add the flour. Start kneading in one direction. Mixture should be homogeneous. Spread the dough with sunflower oil and set aside for 1 hour.
Boil potatoes. Mash them along with cheese and add a bit of salt. Mixture should be homogeneous, as well.
Divide the mixture into equal balls.