In kefir add soda and give a little stand. Beat eggs with sugar, add jam, buttermilk, soda, flour, cocoa. Zamesit the dough and bake at 180 ° C for about 45-50 minutes. Cool and cut into three parts.

For a light crust - in a large bowl beat the butter with sugar until fluffy. One by one add the eggs, beating well after adding each egg. Add orange zest and almond extract. Beat until becomes fluffy and light in appearance. In a separate bowl with a whisk, mix the flour, baking powder, soda and salt, then stir in ground nuts. On low speed, alternately add dry mixture and yogurt, beginning and ending with flour mixture. Spread in a greased and floured form. Bake for about 180 minutes 55-60. Cool and cut into three parts.

Now put one on top of another dark and light cake. Retreating from the edge of 2 cm and cut out a ring with a sharp knife. Again from this incision 2 cm and another ring of smaller diameter. And so 2 more times. That is, the cakes were cut into 5 rings, decreasing in diameter - №5, 4, 3, 2, 1 - a little ring from the center.

Now collect the cake. On the dish lay out the first dark ring of the large diameter No. 5. The next ring # 4 light colors. Now number 3 - dark. Then No. 2 - light and finally No. 1 is a small circle of dark colour.

To prepare the cream beat sour cream with yogurt, add sugar (you can also add vanilla sugar or some flavoring or zest of orange, lemon).

The first layer (already consisting of white and dark rings) put on a plate and smear with cream. Do not spare the cream, that he thoroughly absorbed and the cake came out dry. Next layer will then consist of - No. 5 - light ring No. 4 - dark, etc. Put this layer on top of the first cake and also thoroughly impregnate cream. We have a total of 6 cakes. Top once again grease with the cream and leave on the table to soak for a few hours. At night, this cake would be good to put in the refrigerator to cream froze and well kept then the cubes on the plate. After a night in the fridge to take out the cake and decorate as desired. I smeared the whole cake with cream. The side sprinkled with ground nuts. And on the top put white and black medals made of chocolate.