Here are your supplies

Get your blender

Get your milk

Pour in milk . Probably around half a glass

Get your chocolate orange

Smash it !!!!

It should look something like this

Grab around five slices

Break some up but leave some whole . This is up to you though

Drop them in the milk

Grab the lid / blender

Screw it on

Get some milkshake powder

Put some in your milkshake so far

Blend again

Add marshmallows

Like so