Sweet Potato Pie
["2 c. mashed sweet potatoes", "1 stick oleo, melted", "2 egg yolks", "1 c. brown sugar", "1/4 tsp. salt", "1/2 tsp. each ginger, nutmeg and cinnamon", "1/2 c. milk", "2 egg whites, beaten stiff with 1/4 c. sugar", "1 uncooked pastry shell"]
["Mix the first 6 ingredients; add milk.", "Fold in beaten egg whites.", "Pour into unbaked pie shell. Bake at 400\u00b0 for 10 minutes. Reduce heat to 350\u00b0.", "Bake until firm.", "Sprinkle top with nutmeg sugar if desired."]
["mashed sweet potatoes", "oleo", "egg yolks", "brown sugar", "salt", "ginger", "milk", "egg whites", "pastry shell"]