grandmother said if a fungus can be eaten by insect or a caterpillar, the fungus is not poisonous.
this is not correct, my friend.
iD is Schizophyllum_commune: https://en.wikipedia.org/wiki/Schizophyllum_commune
due to its toughness, considered inedible - tho it is nonpoisonous.
Thank you for telling me about this mushroom .... It's just the opinion of an old man who didn't do any further research just because they often eat the mushroom ... but glory to me. You have provided the best information. let's tost ... nice to meet you