Lion's mane is a type of mushroom known scientifically as Hericium erinaceus. It has a distinctive appearance, resembling a white, fluffy mane, and is often found growing on hardwood trees. This mushroom is edible and has been used in traditional medicine for its potential health benefits. In addition to its culinary uses, lion's mane is studied for its possible effects on brain health. Some research suggests it may promote nerve growth and improve cognitive function. It is available in various forms, including fresh, dried, and as a dietary supplement.