In the past, people would especially pick wild shiitake mushrooms for their nutritional value ... The two mushroom varieties have similar calorie counts (34 for shiitake and 22 for portobello, per 100 ...

Chefs are adding more mushrooms to menus, especially portobello, maitake ... meaning you get a lot of nutrients for very few calories in return. Raw mushrooms range between 19 and 31 calories ...