Mushrooms are a type of fungi found in many different varieties all across the globe. From earthy shitake mushrooms to delicate oyster mushrooms, there is a variety for almost every type of dish. Mushrooms are packed full of micronutrients including copper, potassium, and phosphorus. On the Metabolic Balance mushrooms can be a protein or a vegetable depending on the type of mushroom. Oyster and shiitake mushrooms are considered a protein. They can be used fresh or dried and are delicious in soups, stir fries and salads. All other types of mushrooms are vegetables and can therefore be mixed and combined with another type of protein.