Begin by preparing the hot chocolate. In a mug, add cocoa powder, sugar and salt. In a microwave safe bowl, heat milk in microwave 1 to 2 minutes or until hot. Add the hot milk mixture to the mug and stir. Add the Fireball cinnamon flavored whisky to the mug and stir again. Top with marshmallows and garnish with chocolate sprinkles and a cinnamon stick. Makes 1 serving.