Sweet Potato Pie
["1 egg, beaten", "3/4 c. white sugar", "1 Tbsp. plain flour", "1/2 tsp. salt", "1 1/2 c. mashed sweet potatoes", "1 to 1 1/2 c. milk", "9-inch pastry shell"]
["Mix all the ingredients and pour into a pastry shell.", "Bake at 325\u00b0 for 45 minutes or until firm.", "If using canned sweet potatoes; drain liquid before mashing.", "If using fresh sweet potatoes, peel, cut into small pieces and cook until soft.", "Drain and mash.", "A pat or two of butter adds flavor."]
["egg", "white sugar", "flour", "salt", "mashed sweet potatoes", "milk", "pastry shell"]