Potato Soup
["4 to 6 potatoes, peeled and cut into chunks", "chopped onion and celery (optional)", "1 can cream of mushroom soup", "salt and pepper to taste"]
["Boil potatoes until tender.", "Add onion and celery (optional). Add soup.", "Stir and simmer for 10 to 15 minutes.", "Add salt and pepper to taste."]
["potatoes", "onion", "cream of mushroom soup", "salt"]