Mammy'S Chocolate Pie
["4 Tbsp. flour (rounded)", "1 1/2 c. sugar", "1/2 c. cocoa", "3 eggs, separated", "1/4 tsp. salt", "2 c. milk", "2 tsp. vanilla", "1/2 stick butter"]
["Mix egg yolks and milk in saucepan.", "Heat over low heat.", "Mix cocoa, sugar, flour and salt together. When milk is lukewarm, stir in sugar mixture, stirring constantly over medium heat until thick.", "Stir in vanilla and butter.", "Place in precooked pie shell. Beat egg whites and place on top of pie.", "Brown lightly."]
["flour", "sugar", "cocoa", "eggs", "salt", "milk", "vanilla", "butter"]