The classic and my nemesis cake from my hotel school days. To make this chocolate, substitute ¼ cup cocoa for the ¼ of the flour and omit the cornstarch. Meringue mushrooms optional and marzipan axe optional. You can also fill this with a regular butter icing and use a whipped ganache frosting, as this frosting is here, or fill the log with softened ice-cream and serve, with hot fudge sauce au denier minute (at the last minute) as we say in these parts.