Irish Potato Soup
["4 large potatoes", "2 1/2 c. milk", "1 Tbsp. butter", "1 medium onion", "salt and pepper to taste", "2 Tbsp. parsley (optional)"]
["Peel potatoes and onion.", "Chop in large pieces.", "Cover with water in saucepan; boil until soft.", "Cool slightly; put through food processor or blender.", "Return to saucepan with milk; bring to boil.", "Season to taste.", "Add the butter.", "Serves 6.", "Serve sprinkled with parsley, if desired."]
["potatoes", "milk", "butter", "onion", "salt", "parsley"]