Liquid Nitrogen Marshmallows

This evening I brought home a little liquid nitrogen and we added marshmallows that were cut into quarters.  The marshmallows soak up a little liquid nitrogen and become crunchy, almost like the marshmallows you find in cereal.  When you bite into the marshmallows, their coldness causes the moisture in your breath to condense and produce the appearance of steam as you chew them.  No need to use a full-sized marshmallow or just liquid nitrogen itself.  Too much cold shock to the mouth could crack a tooth.