Chocolate Pie
["4 eggs, separated", "2 c. Pet milk", "2 Tbsp. Hershey's cocoa", "2 c. sugar", "6 Tbsp. flour", "1/2 stick butter", "1 baked pie shell"]
["Beat yolks until well blended. Gradually add sugar and 1/2 milk. Mix cocoa and flour; fold into mixture. Add remaining milk. Cook in double boiler until thick. Add butter; mix well. Pour into shell and top with meringue."]
["eggs", "Pet milk", "cocoa", "sugar", "flour", "butter", "shell"]