Gather your ingredients:
Whipped Cream (optional)
Put 1 heaping tablespoon cocoa powder and 1 rounded tablespoon sugar in mug (add more or less sugar to your taste). Stir. Add just enough water to make a “slurry” consistency and stir well. Microwave for 20 seconds and stir again.
Add the desired amount of milk and stir thoroughly. Microwave for approximately 90 seconds (or your desired hotness). Remove and stir again.
Add marshmallows and/or whipped cream if desired. Enjoy!