Potato Soup
["1 c. chopped onion", "1 c. chopped celery", "6 to 6 1/2 c. cubed potatoes", "2 tsp. salt", "4 c. milk", "1/2 c. sour cream", "4 tsp. margarine", "1 tsp. parsley"]
["Combine onion, celery, potatoes and salt.", "Add water, just enough to cover potatoes.", "When potatoes are almost done, mash all ingredients.", "Add milk, sour cream, margarine and parsley until thickened."]
["onion", "celery", "potatoes", "salt", "milk", "sour cream", "margarine", "parsley"]