Warm the milk to room temperature. Dilute 1 tbsp. sugar, 1 pinch of salt and yeast in it and leave for 20 minutes in a warm place (or until the yeast starts fermenting). Take another bowl, beat up an egg, add softened butter, the remaining sugar and salt. Add milk with yeast. In a large bowl, heap all the flour (sifted) on plate, make a groove in the middle and pour in the mixture, knead dough for at least 10 minutes. Cover the dough and put in a warm place for 1.5 hours. When the dough reaches, make it soft by kneading. Pinch a piece of dough and make a flat cake. When all the cakes are ready, warp up plenty of vegetable oil in a frying pan and fry the patties on medium heat for several minutes on each side. Put the ready donuts on a plate and remove excess oil with a paper tissue.