Shiitake powder can be acquired on-line, at specialty foods merchants or spice shops. For making selfmade shiitake powder, blend dried shiitake mushrooms and sift blended powder through a wonderful mesh strainer. By the way, at that time “Gribochki” were baked that has a mushroom cookie Forged iron over a fuel https://shipping-contaibers-for-s34678.wikibuysell.com/1180898/not_known_details_about_chocolate_mushroom_cookies