In a small bowl combine ⅓ cup milk with tapioca starch, coconut sugar, cocoa powder and spices. Mix until smooth.
Heat the rest of the milk in a small saucepan. When it starts simmering, remove the pan and add the mixture. Whisk very well and return to the stove. Lower the heat and keep whisking quickly until it starts thickening. Remove the pan from the heat and add the chocolate chips inside. Mix to dissolve the chocolate and pour the beverage in two mugs. Serve with more chocolate chips on top.
Notes
You can substitute the tapioca starch with potato or cornstarch.