Sweet Potato Pie
["3 or 4 medium sweet potatoes", "2 c. sugar", "1 egg", "1 Tbsp. vanilla", "1/2 c. milk", "1/4 lb. butter", "dash of salt", "1 unbaked pie shell"]
["Cook and mash potatoes.", "Add sugar and next 5 ingredients. Place in uncooked pie shell.", "Cook at 350\u00b0 about 40 minutes."]
["sweet potatoes", "sugar", "egg", "vanilla", "milk", "butter", "salt", "shell"]