Flour place in a container, which will interfere dough. In 350 ml lukewarm water dissolve the yeast, sugar and salt. Put the flour in egg white, the oil and yoghurt. Gradually add the water with the yeast. Kneaded dough (such as bread) and divided into 3 balls. Roll out pastry to a thickness of 3-4 mm. Are lining up on each other, and between them put margarine and feta cheese. Wound on a roll, twist and curl snail (or cut into florets) Place in a greased baking tray and leave for half an hour in a warm place to rise. Before you put in the oven smeared with egg yolks and a little margarine and sprinkle with sesame and poppy seeds. Bake at 250 ° C in a preheated oven.