Tengang daga or black fungus mushrooms are low in calories and fats but, like other common types of mushrooms, they are high in protein and fiber, as well as minerals and vitamins. Black fungus is particularly high in potassium, a mineral and electrolyte required by all cells of the body. Black fungus mushrooms have also been used in traditional Chinese medicine for centuries and have proven to be effective in reducing levels of LDL cholesterol in the body. Perfect to add in recipes like pancit and stir fry.