Source: University of Connecticut, Family Nutrition Program, Senior Nutrition Awareness Project (SNAP)
1. Peel and chop the onion.2. Chop the celery into small pieces.3. Put the celery and onion in a saucepan.4. Add 1/2 cup chicken broth (save the other cup of chicken broth for later.)5. Cook these ingredients on low heat. Let the broth simmer for 2-3 minutes.6. In a small bowl, mix the dry milk, flour, and pepper. Add them into the 1 cup of chicken broth that hasn't been cooked yet. Beat till smooth.7. Add this mix to the celery, onion, and broth.8. Cook over medium heat till the soup thickens.