Heat cream and milk over medium heat in a heavy bottomed saucepan until it just starts to simmer

Remove from heat and add chocolate, stirring until the chocolate is melted and mixed in thoroughly

Whisk yolks and sugar in a large bowl

Slowly add the cream mixture, whisking after each addition

Pour into six custard dishes

Place cups in a baking dish and add enough hot water to come up half way on the cups

Place baking dish in a preheated 325 degree oven and bake for about 55 minutes or until the custard is set, but the middle still moves a little