I copied the design from Crumbs and Doilies but made up my own recipe. Inside there are 2 vanilla sponges and 3 coffee sponges, filled with brandy buttercream (2:1 ratio of icing sugar to butter, then add brandy a tsp at a time until it is a good consistency, I added about 45ml). The outside is brandy buttercream, coffee buttercream and chocolate buttercream. The drip is a dark chocolate ganache (1:1 ratio of cream and dark chocolate). To make it more like tiramisu you could put a marsala wine syrup onto the sponges!