Chocolate Pie
["3/4 c. sugar", "3 egg yolks", "1 1/2 c. milk", "3 Tbsp. cocoa", "3 Tbsp. flour", "1 tsp. vanilla"]
["Cook until thickens, then pour into pie shell.", "Cover with meringue and cook at 300\u00b0 until browned slightly.", "Makes one 9-inch pie."]
["sugar", "egg yolks", "milk", "cocoa", "flour", "vanilla"]