This is a true culinary symbol of the era! The "potato" cake was invented by Soviet confectioners for purely practical reasons: to use the leftover sponge cake left over from the cakes. The recipe first appeared in the official collection of 1952, and then spread throughout the country in a variety of variations. The cards contain the most authentic recipe - the same one from crackers or cookies, with buttercream and aromatic cocoa. - Need to cook.