Heat the cream and milk with the cinnamon and vanilla bean (split lengthwise) very slowly for 15-20 minutes. (If you don't have any beans add 1-2 tsp of vanilla after heating). Remove the bean and cinnamon. Add the chocolate. Mix until fully melted.
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Serve topped with some very dense fresh whipped cream. Serves 1-2 depending upon how much of a glutton you are.
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For a richer chocolate, use 4 oz of milk, 4 oz of cream, 4 oz of chocolate. Serve in coffee mug.