The base is carved so as to obtain as well. Mix softened butter with the sugar and cocoa. Add jam, milk, the walnuts, rum and vanilla. Stir and add the crumbs of-cut base. This mixture is filled cake. Top is coated with beaten 3 tbsp sugar cream. The decoration is optional - fruit sticks, walnuts. Cream mix of hard snow if she is cold and dish with cream placed in another container with crushed ice or ice water.