Break up the
chocolate into small pieces and place it in a
saucepan with the cream.
Heat gently,
stirring occasionally, until the chocolate has
melted and the mixture is smooth.
Allow the icing
to cool until it is thick enough to coat the back of
a wooden spoon. Use it at this stage for a smooth
glossy icing, or allow it to thicken to obtain an
icing which can be swirled or patterned with a cake
decorating scraper.