1Combine the dark chocolate, milk chocolate, cinnamon sticks, cloves, allspice berries, orange zest, whole milk, heavy cream, cocoa powder, salt, and maple syrup in a pot.
2Heat and stir the mixture until the chocolate is completely melted and the ingredients are well incorporated.
3Serve the hot chocolate in a mug and top with mini marshmallows and freshly grated nutmeg.