Mushrooms are a good sources of selenium, an antioxidant mineral, as well as copper, niacin, potassium and phosphorous additionally, mushrooms provide protein, vitamin c and iron a very high fibe content, vitamins and minerals, antioxidants, heart health and diabetes protection are just some of the barley nutrition benefits that make it one of the best whole grain choicesthis warm and mild tasting soup is best for chilly winters and helps keeping you warm with loads of nutrition.