Floating islands in chocolate

Chocolate custard

• 500 ml (18 fl oz) milk
• 5 egg yolks

To make the chocolate custard, heat the milk, but do not allow to boil.

Using an electric mixer, beat the egg yolks with the sugar until the mixture is pale and has doubled in volume.

When the milk is almost at boiling point, pour it over the egg yolks, stirring constantly.

Return this mixture to a fairly high heat, stirring constantly.

Cook until the mixture coa