Chaga mushroom (Inonotus obliquus) is a parasitic fungus primarily found on birch trees in cold climates. It features a distinctive black, charcoal-like exterior and a vibrant orange-brown interior. Traditionally used in herbal medicine, chaga is rich in antioxidants, polysaccharides, and betulinic acid, contributing to its potential health benefits, including immune support and anti-inflammatory properties. Its unique appearance and bioactive compounds make it a subject of interest in natural health practices.