Beat egg whites with sugar. Add egg yolks, sour cream, flour mixed with baking powder. One Cup of flour 1-2 teaspoon baking powder (don't know exactly how much added flour, but the dough should be the consistency of thick cream).

Divide the dough into two equal parts. In one part add cocoa. Pour on a baking sheet greased with butter. Put in preheated oven for 10-15 minutes.

In another part of the test - vanilla and tangerine (cloves cut into 2-3 parts). On a baking sheet to evenly distribute the tangerines. While baking the second bisquitik, to make a syrup. Sugar dissolved in boiled water, add the brandy. To cool the syrup.

Cut the cakes into two parts (not necessarily, but I do got the curves, therefore it was necessary))) to Throw bisquitte syrup. While they are soaking, make the cream: mix the condensed milk with butter. Well, and fold the cake. One cake, cream, cake, cream...so, until it's all over) to Make the glaze: 8 tbsp sour cream, sugar and 2 tbsp cocoa bring to a boil, add 20 g of butter. Boil for 7 minutes. To cool down a bit. Coat the cake with icing, you can decorate (I was a little nuts).

After a couple of hours you can eat)