Cream Of Potato Soup
["2 c. sliced potatoes", "1/4 c. finely cut onions", "1/3 c. finely cut celery", "3 c. water", "1 1/4 tsp. salt", "few grains pepper", "1 c. milk", "1 Tbsp. butter"]
["Boil potatoes, onion, celery, salt, pepper and water about 20 minutes.", "With hand masher, mash potatoes.", "Add milk and butter."]
["potatoes", "onions", "celery", "water", "salt", "pepper", "milk", "butter"]