Prepare the required ingredients. Dissolve fresh yeast and sugar in warm milk, put in a warm place until a frothy cap appears. Sift the flour into a bowl.
Make a depression in the center of the flour, pour in the yeast that has come up, add an egg, melted butter, salt. Knead a soft, non-sticky dough. Cover the dough with a bowl and leave in a warm place for 1 hour. Pound the dough. Sprinkle the working surface with corn flour, sprinkle the dough with flour and roll it into a layer 1-1.5 cm thick.
Cut out the mugs using a glass or round mold.
Transfer the pieces to a baking sheet lined with parchment. Bake in a preheated oven at 180 degrees for 15 minutes.
Or heat a skillet with a thick bottom and a little oil. Fry the muffins on one side over medium heat for about 5 minutes. Turn over, cover, cook for 3 more minutes. Remove the lid, fry for another 2 minutes, until golden brown.