Bring stock to boil for 2 minutes in a large, non-reactive stockpot with lid on, over high heat. Add onion, celery, and garlic. Lower heat and simmer for 2 minutes. Add noodles and cook 5 more minutes. Remove from heat and add herbs and salt and pepper, to taste. Serve with lemon halves and add squeeze of lemon juice if desired.
Per serving: Calories: 167; Total Fat: 3.5 grams; Saturated Fat:1 gram; Protein: 9 grams; Total carbohydrates: 25 grams; Sugar: 6 grams; Fiber: 2 grams; Cholesterol: 19 milligrams; Sodium: 366 milligrams