Hi, One time we were up at High Point and some people were gathering mushrooms in the woods. We said how can you tell the poisonous from the non-poisonous. Are you ready for this answer? They said you just lay them on your tongue and if they burn they are poisonous. Not about to try that one and I love mushrooms. Just buy mine at the store. If Carl says puffballs are edible I would believe him. Never see them down here in the south. Pat