Easy Chocolate Pie
["2 1/2 Tbsp. cocoa", "2 1/2 Tbsp. cornstarch", "3/4 c. sugar", "2 eggs, separated", "3/4 c. evaporated milk", "3/4 c. water", "1 Tbsp. butter", "1 tsp. vanilla", "1 pie shell (baked)"]
["Combine cocoa, cornstarch and", "sugar", "in", "top", "of double boiler.", "Add milk, water", "and", "slightly beaten egg yolks, stirring well.", "Cook in double boiler over medium heat until thick. Add vanilla and butter.", "Pour", "into pie shell.", "Beat egg whites until stiff;", "add 4 tablespoons sugar.", "Spread over pie.", "Bake at 425\u00b0 until brown.", "Yields 6 servings."]
["cocoa", "cornstarch", "sugar", "eggs", "milk", "water", "butter", "vanilla", "pie shell"]