Mildred'S Chocolate Pie
["1 c. sugar", "1 Tbsp. cornstarch", "1 c. boiling water", "1 oz. chocolate, melted", "3 egg yolks, beaten", "1 tsp. vanilla", "1 baked pie shell"]
["Mix sugar and cornstarch.", "Add boiling water.", "Cook in double boiler until mixture starts to thicken.", "Add eggs and chocolate. Cook until mixture becomes thick.", "Add vanilla; pour into baked pie shell.", "Top with meringue."]
["sugar", "cornstarch", "boiling water", "chocolate", "egg yolks", "vanilla", "shell"]