In a small bowl, mix the confectioners sugar and cocoa powder
Add the whipping cream to a medium or large bowl
Using a hand mixer, start beating the whipping cream. *You can use a whisk, but it will take a lot longer
As the whipping cream starts to thicken, slowly add the cocoa and sugar mixture and continue to mix
Continue to mix until chocolate whipped cream is thick, almost like a frosting
Pour 1 and 1/2 cups milk to each glass
Top the milk with whipped chocolate. *It's okay if it falls in!
Stir to mix the whipped chocolate cream in
Enjoy!
Notes
If you want the chocolate to set on top of the milk, you kind of have to stick to the top of the glass. Don't worry about it though, you are going to stir it in a second anyway!