To store this soup for later, refrigerate in a shallow container so it cools rapidly. Once completely cooled, cover tightly and refrigerate for up to 3 days.
To freeze this soup, pour into freezer containers, leaving 1/4 - 1/2 inch headspace (because soups expand as they freeze) and store for up to 6 months.
Want to take your slow-cooker meal to an outing? Simply wrap the slow-cooker in a towel or newspaper to keep it warm. Attach rubber bands around the handles to secure it for travel.
Pearl barley, its most common form, is the perfect slow cooker grain. The long, slow cook time turns barley tender, yet not gummy.
Select lean beef to prevent having to trim excess fat before adding the beef to the soup.