Chocolate Pie
["1 1/2 c. sugar", "4 1/2 Tbsp. cocoa", "4 1/2 tsp. cornstarch", "1 1/2 c. milk", "3 egg yolks, beaten", "1 Tbsp. butter", "1/4 tsp. vanilla"]
["Sift together sugar, cocoa and cornstarch.", "Add milk and egg yolks.", "Cook until thick, but not real stiff.", "Stir constantly. Remove from heat and add butter and vanilla.", "Cool.", "Put mixture in baked pie shell.", "Add meringue."]
["sugar", "cocoa", "cornstarch", "milk", "egg yolks", "butter", "vanilla"]