Miracle Mushroom of Immortality. Organic Herbal Tea. USDA Organic. Certified Kosher. Clean Ingredients. Unbleached Tea Bags. Non GMO. No Artificial Flavors, Colors or Preservatives. Highlighting the reishi mushroom, also known as the mushroom of immortality, this delightful benefits-rich mushroom tea blend brews into a delicious, easy-to-drink tea. Reishi Mushroom Blend. Known as the Mushroom of Immortality, the reishi mushroom enjoys an ancient reputation as somewhat of a miracle fungus. revered as the most powerful tonic in the field of Traditional Chinese Medicine, this rare mushroom is considered a foundational substance, a tonic that practitioners recommend enjoying daily. We have incorporated rooibos, cinnamon and licorice into this blend to maintain all of the benefits of reishi while providing a sweet, nurturing flavor.