Della Davis' Sweet Potato Pie
["1 1/2 c. cooked sweet potatoes, mashed", "1 stick butter or margarine", "1 1/2 c. sugar", "3 eggs, separated", "1/2 tsp. vanilla extract", "1/4 tsp. lemon extract", "1/4 tsp. allspice or cinnamon"]
["Combine potatoes, butter and sugar.", "Beat yolks.", "Add to potato mixture.", "Add flavoring and spices.", "Beat egg whites until frothy.", "Fold into mixture.", "Pour in unbaked crust.", "Bake for 10 minutes at 425\u00b0.", "Reduce heat to 350\u00b0 and bake until firm."]
["potatoes", "butter", "sugar", "eggs", "vanilla extract", "lemon extract", "allspice"]