This is a lovely light rich-flavoured chocolate cake that is gluten-free. Use fresh berries in season if you can, or buy organic frozen raspberries. You can make a berry coulis to serve with the cake if you like: puree 200g berries with 1 tbs pure icing sugar and a dash of orange liqueur then sieve to remove the seeds. Drizzle over the cake before serving.
The cake keeps well in an airtight container for a day or two... if it isn't eaten first!