Chaga is a type of fungus that primarily grows on birch trees in cold climates, particularly in regions like Siberia and parts of North America. It appears as a black, irregular mass on the tree bark and is known for its high antioxidant content, which may contribute to various health benefits. Traditionally, Chaga has been used in folk medicine for its potential to boost the immune system and improve overall health. It can be consumed as a tea, powder, or extract, and is often praised for its rich nutrient profile, including vitamins, minerals, and polysaccharides.