Soeos’ premium compressed black fungus is made from top quality black fungus. It's free of impurities and additives, compressed into convenient blocks that have long shelf life, and yields 10 times the volume after soaking in warm water for about 30 minutes. Woodear mushrooms (Auricularia Polytricha) , also known as Black Fungus, are cultivated all over the world but grown for the commercial dry goods market almost exclusively in China. It has a firm skin with a slightly crunchy texture and an earthy flavor, and it is becoming a hip choice for modern chefs. Black fungus has many healthy properties, such as amio acids and vitamins, when consumed regularly.