Roughly chop the chocolate. Heat the milk with bourbon vanilla sugar in a saucepan. Melt the chocolate slowly while stirring. Stir in the chocolate flakes. Divide the chocolate drink between 4 cups, serve with cinnamon sticks.
Tips:
Adults also like the chocolate drink with a shot. Simply stir in 8 tablespoons of amaretto, rum or orange liqueur. And if you prefer light, you can replace milk chocolate with white.