Chaga.Mushrooms wild harvested in Alaska. From the boreal forest, Chaga is a fungus that grows only on birch trees. 100% pure, natural dried raw Chaga chunks (Inonotus obliquus). Chaga mushrooms are rich in antioxidants, beta-glucans, and other beneficial compounds that can boost the immune system, reduce inflammation, and promote overall health and wellness. How to make Chaga tea? Choose around 4 to 5 separate pieces of Chaga and place them into a pot containing 4 cups (1 liter) of water. Gradually heat the pot until it reaches a gentle simmer, and let the tea simmer for at least 15 minutes. For larger quantities of tea, allow the pot to simmer for a longer duration, approximately 2 to 3 hours. Remove the Chaga chunks from the tea by straining it, and serve the hot tea promptly.