This hearty bowl of soup is a perfect way to use up some of your turkey leftovers. Chicken can also be substituted for the turkey.
Saute the onions in the olive oil for a couple of minutes. Add the garlic and cook for an additional minute.
Add the celery and carrots and cook for 2-3 minutes.
Add the remaining ingredients and bring to a boil. Reduce heat and simmer until the vegetables and barley are tender, approximately 45 minutes. Adjust seasoning and serve.