add ice cubes to single serving blender ( about a cup but full it to about halfway up the cup)

add the banana in pieces, just separate by hand

add cocoa and hot chocolate powder (or sugar, if you opt for it)

mix all until you can't hear the blender cutting up all the ice cubes anymore. in my magic bullet it takes about a minute.

this makes just one serving but double or triple if you want to, just use a bigger blender.