Mix in a bowl the oil, another molten fat yogurt in we dissolved baking soda, egg and mix well. Add flour and interfere until a medium stiff dough. Divide dough into 3 parts. Roll out each of crust with a thickness of 2-3 mm. Cut the sheet of congruent triangles we start from the center of the sheet at the end. In the widest part of each piece is placed delight and walnut nut optional. Wound on the roll. So make all the cookies and stacked away in a baking dish lightly greased with fat (because the dough is greasy). Bake in preheated oven until browned. Immediately after removing from the tray Oval well in powdered sugar in which they were placed and mixed vanilla. Arranged in panels.