01 -
In a saucepan set over medium heat, warm the whole milk until it is steaming but not boiling.
02 -
Add the dark chocolate chips, cocoa powder, granulated sugar, and vanilla extract to the steaming milk. Stir constantly until the chocolate is fully melted and the mixture is smooth and well combined.
03 -
Pour the hot chocolate evenly into two mugs. Place marshmallows on top and sprinkle with popping candy for a bubbling, fizzy effect.
04 -
Serve while hot for the best bubbling visual and texture.