01 -
2 cups (250 g) confectioners' sugar.
02 -
1 cup (118 g) Dutch-processed cocoa powder.
03 -
2 ½ cups (250 g) powdered milk.
04 -
2 teaspoons cornstarch.
05 -
1 teaspoon kosher salt.
06 -
For serving:.
07 -
Mini marshmallows (optional).
08 -
Hot water (or milk).