Eggs, sugar, the oil and yoghurt crash to a homogeneous mixture with the aid of a mixer. They add the flour previously sifted and admixed with ammonia soda, baking soda and salt. Divide it into three equal parts, which are baked in the pan, pre-greased with sunflower oil and sprinkled with flour (tray size is 28-30 cm) until golden. For the cream: Milk is boiled and added to it 200 g of sugar, the butter and vanilla. Flour and egg yolks to break with a little water to thin boza and with constant stirring add to the boiling milk in a thin stream. Stirring is continued for about 10 minutes until the cream boil and thickens. Allow to cool and occasionally stir for not catching sheet and when completely cool, add it to the beat-hard snow with the remaining 100 g of sugar egg whites. The cake is assembled boards are coated with some of the cream and make one another. Top garnish optional.