Custard Mystery
["1 c. sugar", "2 Tbsp. flour", "2 Tbsp. shortening", "2 egg yolks", "2 egg whites", "1 lemon (juice and a little rind)"]
["Beat to a cream and add beaten egg whites last to which has been added 1/4 teaspoon salt.", "Put in baking dish and set in a dish of hot water.", "Bake in moderate oven 30 minutes."]
["sugar", "flour", "shortening", "egg yolks", "egg whites", "lemon"]