Best Chocolate Pie
["1 1/2 c. sugar", "3 Tbsp. cocoa", "3 Tbsp. self-rising flour", "2 c. evaporated milk, undiluted", "3 eggs, separated", "1 tsp. vanilla", "2 Tbsp. margarine", "1 baked pie shell"]
["In pot, combine sugar, cocoa and flour.", "Stir and get out lumps.", "Add milk and cook over low heat.", "Stir as it thickens. When mixture gets very hot, add beaten egg yolks slowly as you stir.", "Continue cooking and stirring until very thick.", "Remove from heat; add margarine and vanilla.", "Pour in pie shell.", "Beat egg whites to make meringue.", "(If using sugar, use only one tablespoon for each egg white.)"]
["sugar", "cocoa", "flour", "milk", "eggs", "vanilla", "margarine", "shell"]