Chocolate Icing
Chuck your icing sugar and cocoa together into a bowl and dribble in a tiny bit of warm water - like about a tablespoon full. Stir it up.
It needs to be really good and thick if it's going on a cake - if you're tipping it over a square or slice you can relax it a little. If it's hard to stir or not disolving gradually put more water in ... I said GRADUALLY!
Then stir in the butter which helps give it a nice cholcolatey smoothness, like Barry White.
