Mix the eggs with the sugar. Add consecutively yogurt (or fresh), melted butter, flour, which is mixed baking powder. Mix well and add minced meat walnuts and vanilla. Mix again and half of the mixture was poured into a baking tin, which is thoroughly coated with the soft butter and topped with sugar. To the remaining mixture, raisins and cocoa. Stir the mixture and pour the white mixture. Bake in a moderate oven. Once the cake is ready, you can sprinkle with powdered sugar.