Chocolate Meringue Pie
["1/2 c. cocoa", "1/4 c. cornstarch", "1 c. sugar", "1/2 tsp. salt", "2 egg yolks", "2 c. milk", "3 Tbsp. butter", "1 tsp. vanilla"]
["Combine ingredients in order given except the butter and vanilla.", "Cook over boiling water until mixture thickens, stirring often.", "Remove from heat; add butter and vanilla."]
["cocoa", "cornstarch", "sugar", "salt", "egg yolks", "milk", "butter", "vanilla"]