Melt the chocolate in a glass bowl over some simmering water. The water must not keep boiling while the chocolate is melting.
Now lightly heat the cream and brandy together. Pour into the melted chocolate. Stir well. Now add the cocoa powder mix well.
Using a small baking pan layer with wax paper. Also grease the pan well. Now add the cake mixture. Place the cake in the fridge until firm, take the cake out just before you want to serve it. Place on a nice cake tray, there will be some chocolate sauce at the bottom. Serve with some whipped cream.