One of my books refers to something poisonous, which could (just) be confursed with Fairy Ring Champignons by a determined idiot - iirc the gills were closely packed and the thing was white.
It Could just be that - but I certainly wouldn't be eating those !
scabs off,dry the caps for 12 months to allow for carboxilation of a couple of the moody alkaloids into more benign compounds and test them by starting with a small amount(as they are very variable in content) is the siberian shamanic way.
it does avoid the worst of the toxic effects but they are not among my shamanic substances of choice as they are a bit one dimensional while in the dream time and the bouncy wake up or wake up feeling dreadful seems a bit unpredictable.
similar to cane toads but less hoppy.
im not too sure about the lappland legends of using a reindeer to "filter" the product i half suspect they were having a laugh with foolish strangers who might be encouraged to follow a reindeer with a mug.
Hmmm ! Seems like a lot of clat to go through in preparation, when it is reported by those who know far more than we, that a person would need to eat 70 kg of Fly Agaric before coming to any real harm !
there is a big difference between real harm(and i recon far less than 70 kg would cause real harm) and a safe but mostly unpleasant few days.
personally i prefer no harm and a minimum of vomiting with some sweaty trippy coma,some more vomiting and feeling dreadful for a while before feeling great.
that is based on a fair bit of experience.
alternatively there is a nice cup of hot chocolate or a huge selection of other intoxicants
im not keen on the things nor is anyone else i know who has tried them.perhaps they are worth trying for the knowledge that they are a bit of a hard road .
much like a few of the south american ayescu brews and the "snuff of madness" there are good reasons A.M are not popular even if properly prepared.
there are quite a few shrooms and other psychoactive/ shamanistic botanicals and critter based substances that are safer,far nicer and much less toxic(if properly prepared and used at a suitable dosage).