Old-Fashioned Vinegar Pie
["1 c. sugar", "1 2/3 c. hot water", "3 Tbsp. flour", "1/3 c. good vinegar", "2 egg yolks, beaten", "2 Tbsp. butter"]
["Mix vinegar, water and eggs.", "Add flour and sugar, which has been mixed together.", "Cook in double boiler until thick.", "Add butter.", "Mix and pour into baked pie shell.", "Beat 2 egg whites for meringue.", "Add 6 tablespoons of sugar.", "Cover filling and bake in oven until topping is brown."]
["sugar", "water", "flour", "good vinegar", "egg yolks", "butter"]