The smoothest, richest, double chocolate dessert made with dark chocolate, cocoa, cream and eggs! For a gourmet touch, sprinkle a little coarse sea salt and shaved dark chocolate on top of each dessert before serving.
Heat the milk and cream in a metal bowl over a saucepan of simmering water, making sure the water does not touch the base of the bowl. Do not let the milk boil.
In a separate bowl, beat the eggs, cornflour, sugar, cocoa, salt and diced chocolate. Add hot milk, one ladle at a time, while whisking so the chocolate melts but the eggs don't cook.
Pour mixture into a large saucepan and heat very slowly, stirring, until just below boiling point, about 98 C.
Process in a blender until very smooth, or beat 5 minutes with a wooden spoon. Transfer into individual serving dishes; cover with cling film and chill for 2 to 3 hours in the fridge.