Cream butter and sugar. Add egg yolks and stir. Add melted chocolate and stir. Add raisins and stir. Add cinnamon, cloves, flour and stir. Add nuts and jam and stir. Now add the baking powder and buttermilk and quickly add o the cake mixture and stir. Fold in stiffly beaten egg whites. Quickly pour mixture into greased and floured angel food cake pan. Bake at 180ºC until cake stops singing, about 45 minutes. Make sure you time the recipe so your guests are present during the baking. Once cake is baked the effect is over, Eat the cake...it was great.