I baked this last weekend but prior to that it had been 10 years. It really is so delicious and not overly rich like dark chocolate mud cakes. I think what has put me off doing this cake is the decoration which is fiddly and time consuming, so unless making chocolate curls is something you like or are good at - I would suggest leaving them off, or as I ended up doing this time, just break the chocolate up into large shards and stick them into the top of the cake. Other than that, the cake is dead easy to make...but its probably the decoration that makes it look impressive.
This cake is suitable to freeze before icing. The chocolate melts can be melted in the microwave. The preparation time would be reduced by 30 minutes if you do not do the curls. Also, the preparation time includes 30 minutes cooling time for the mixture.