Pearl barley porridge with mushrooms, onions, carrots and butter. Barley porridge with mushrooms, onions and carrots is a very satisfying dish, rich in taste, which can be served as an independent one, especially on a lean table. Serve as a side dish if desired. Pearl barley is one of the oldest grain crops, it is more than ten thousand years old. It is made from barley. It contains a large amount of vitamins and minerals, and is also rich in fiber. The name "pearl barley" comes from the English name of the corresponding cereal - pearled barley. This, in turn, is due to some external similarity of polished barley grains with pearls. Very tasty and healthy!