Beef Barley Soup with Mushrooms

Pot roast made in a slow cooker yields extra gravy and meat that can be turned into a hearty soup. Here’s what we discovered:

Test Kitchen Discoveries

• Thin the gravy with water to create a soup-like broth.
• A little barley goes a long way. This tiny grain will swell dramatically as it cooks, so you need only a small amount for an entire pot of soup.