Beat the eggs with the sugar until the weight increase twice. Add the condensed milk, sour cream and mix well. Sift together the flour, baking powder and cocoa. Add to the dough in small portions and mix.

Divide the dough into 2 parts. First, bake one cake, then another. Pour the batter into greased with vegetable oil form.

Bake at 180* 20 minutes to Give the cakes to cool and each cut lengthwise into 2 parts.

To prepare the cream. In smetana add sugar and slightly beat with a mixer so that the sugar is dissolved, and the cream was lush. I show you the name of the cream that I used, because it is well whipped and turns into "milk". Only I can beat. The cream is ready. Cut two bananas in half lengthwise and postpone the 3 halves to decorate the cake. Thinly slice the rest. You can use more bananas in the cake. Be guided by your taste.

To assemble the cake. Lubricate each cake with cream, spread banana slices on the surface.

Cover the top and sides with cream, smooth the surface with a spatula or wide blade knife. Boca sprinkle with ground nuts. Put the bananas and decorate with melted chocolate. Decoration of chocolate Cream heated over a fire and set aside. Put them broken into pieces of chocolate, let stand for 1 min and stir well until smooth. Pour into kinetic or file. Tie and put it in the fridge. When thickens, kornetika have to cut a small corner and squeeze to a trickle the chocolate in zigzag motions. Sprinkle with nuts.