Chocolate Icebox Cake
["2/3 c. sugar", "3 Tbsp. cornstarch", "1/2 tsp. salt", "1 1/2 sq. chocolate", "2 c. milk, scalded", "3 egg yolks", "2 Tbsp. butter", "1 tsp. vanilla", "1 (9-inch) pie shell, baked", "whipped cream"]
["Scald milk with chocolate added to it.", "Mix sugar, cornstarch and salt.", "Stir milk gradually into dry ingredients.", "Cook over boiling water for 10 minutes.", "Stir constantly until mixture thickens."]
["sugar", "cornstarch", "salt", "chocolate", "milk", "egg yolks", "butter", "vanilla", "pie shell", "whipped cream"]