Yeast chops, sprinkle with sugar and a pinch of salt and leave to liquefy. Sift the flour in a big bowl in the middle, there is an indentation, which put the melted but not hot butter (which are separated by 3 tbsp) and the melted margarine, beaten eggs with salt, yeast and yoghourt with soda . The dough is kneaded well and put in an oiled baking dish. The surface of the cake tin with half of the separated butter, prick with a fork and bake in a very hot oven. As it turns brown, smeared again with the rest butter and dopicha. Remove from the oven and turn in the towel to izprahne.