Combine brown sugar and cocoa powder in a mixing bowl , set aside
In your saucepan, add in your boiling water and squares of dark chocolate and the heat to medium. With a whisk, stir the chocolate around until it melts and dissolves into the boiling water. Add in your cocoa powder and brown sugar and continue to whisk.
On a low to medium heat, add your milk or non-dairy alternative and your cannamilk. Whisk vigorously until the mixture is steaming but not boiling.
Take the saucepan away from the heat and set it aside. Add 1 oz. of the bourbon into every cup that you intend to serve hot chocolate with.
Enjoy!