Prepare the cocoa and chill in the fridge until cold.
Blend with 1 cup of ice until smooth and frothy.
Toast the marshmallow under the broiler or carefully on the stovetop.
Let the marshmallow cool a bit.
Top the cocoa with a swirl of whipped cream.
Grate chocolate on top.
Add a little whipped cream on top of the wafer and balance it in the cocoa.
Carefully stack the marshmallow on top of that and take a photo really fast before it falls over.
