Chaga is a parasitic mushroom that grows on birch trees. It can grow for over 10years sacking its sap,the life force of the tree. It has been called a "tree cancer" since it will eventually kill its host tree. It is the same family as shelf fungi. It forms a hard and dark nodular mass resembling hurned charcoal. It grows mainly in Russia's cold climate.

Chage is also "jewel of the mushrooms" as well as "phantom" due to its rarity.Various components in Chaga stimulate antioxidant, antitumor, and antiviral activity. It has been used as an effective health drink since ancient times to increase natural healing power against diseases.