Can't remember the last time I ate a marshmallow, toasted or otherwise. But since you asked, my answer is 3.
2.5, most people don't have the patience, but I do.
When I was a kid, my dad told me eating marshmallows would make me an airhead (it was the 80s because marshmallows are made of just sugar and air.
Same as cotton candy.
2 unless I'm hangry or stressed, then it's right out of the cupboard