I am helping DD Belinda out by making a couple of chocolate mud cakes for a wedding cake she is decorating - for this coming weekend in Canberra! The 30cm (or 12") cake took 1.68 kg of chocolate and 1 kg of butter. Oh yes, also a cup of Kahlua coffee liqueur, apart from what seems excessive amounts of ingredients. Just as well it's a wedding cake and only small amounts will be eaten by the guests. It's enough to clog your arteries just looking at it :-).