how many calories are in portobello mushrooms
One portobello mushroom averages 84 grams in weight and contains 18 calories, according to the USDA Nutrient Database. The majority of a portobello's weight is attributable to its water content. One 84 gram portobello contains 77.97 grams of water, which contributes to the mushroom's low calorie content. Nutrients. A large portobello mushroom provides 3.25 grams of carbohydrates, 1.77 grams of protein, 1.1 gram of fiber and 0.29 grams of fat. Notably, the portobello contains 306 milligrams of potassium.