Healthy Potato-Leek Soup
["2 to 3 leeks, chopped", "3 stalks finely chopped celery", "2 to 3 potatoes, peeled and diced", "3 to 4 c. water or stock", "1 small bay leaf", "salt", "pepper", "1 c. instant dry skim milk", "1 to 2 Tbsp. margarine", "parsley, chives, scallion or dill (optional)"]
["In a heavy pot, saute leeks and celery.", "Add potatoes, water or stock, and bay leaf; cook until tender.", "Let cool briefly. Then, while stirring with a whisk or blending, add dry milk and margarine.", "Garnish with parsley, chives, scallion or dill, if desired.", "Yield:", "4 servings."]
["leeks", "celery", "potatoes", "water", "bay leaf", "salt", "pepper", "milk", "margarine", "parsley"]