Beat eggs with sugar. Add macerate butter, cocoa, flour with the baking powder, vanilla and the walnuts. Mix. The mixture is divided into two and bake twice in a greased and sprinkled with flour pan in preheated oven. Side of baked bases are cut thin strips. These strips are baked in a hot oven - to become as hard biscuits. Canned condensed milk unopened put in a water bath at a very low heat for about 3 hours (if cooked more or stronger is fire danger Shot ). Then remove from heat and leave to cool completely. Cool cans open, condensed milk is poured into a bowl and mix with soft butter. One base is placed in a suitable plate, smeared with cream, put it on top second base and also smeared with cream. Fired clippings from the bases are broken and they sprinkle the cake top and sides.