Mushrooms contain a large variety of nutritive elements: carbohydrates, fat, mineral salt as well as vitamins and many others. Nutritional value of mushroom/ 100 g: water 85-94%, dry solids 6-15%, protein 0, 3-1%, carbohydrates 1, 1-3, 7%, fat 0, 3-1%. Potassium salt and phosphates which mushrooms contain are of a great value for health.
It should be noted that mushrooms are poor in calories: 15-31 Kcal per 100 g