Chocolate Sunday Pie
["9-inch crust, baked and cooled", "1 envelope unflavored gelatin", "1/4 c. cold water", "2 c. milk", "1/8 tsp. salt", "4 Tbsp. sugar", "2 egg yolks, slightly beaten", "1 tsp. vanilla", "2 large egg whites, beaten", "2 Tbsp. sugar"]
["Soak for 5 minutes the envelope of gelatin and 1/4 cup water; set aside.", "Combine in heavy saucepan the milk, salt, 4 tablespoons sugar and egg yolks; cook until custard thickens.", "Add gelatin.", "Stir until dissolved.", "Remove from heat.", "Add the vanilla.", "Cool; fold in 2 large egg whites, beaten until soft peaks form.", "Add 2 tablespoons sugar.", "Pour into crust.", "Top with whipped cream.", "Top with grated Hershey bar."]
["crust", "unflavored gelatin", "cold water", "milk", "salt", "sugar", "egg yolks", "vanilla", "egg whites", "sugar"]