Lion's Mane grows wild on dead or weakened deciduous trees—primarily oak, beech, and walnut—in temperate forests across Europe, Asia, and North America. It is a rare species in nature and is included on the red list of threatened species in 13 of the 23 European countries where it grows wild.
In traditional Chinese medicine, it was used as a tonic food for the stomach and nervous system, and was known as Houtou. In Japan, it is called Yamabushitake, a reference to the ascetic Yamabushi monks who incorporated it into their diet. For centuries, it was considered a food reserved for people who required sustained concentration.
In Western cuisine, it is a relatively recent addition. Its unmistakable appearance—a white mass of hanging spines without a distinct cap or stem—has made it a common ingredient in creative and vegetarian restaurants, where it is used as a seafood alternative due to its texture and behavior in the pan.