Beefy Lentil Barley Soup Why Try Beefy Lentil Barley Soup? This lentil barley soup is so hearty and satisfying. It gets its beefy umami flavour from both green and red lentils, caramelized onions, tomato, and believe it or not-soy sauce! It's the perfect fit for a crisp fall afternoon lunch, or a quiet and cozy