Omelette Souffle

Put six yolks of eggs in a basin with six ounces of pounded sugar, a little salt, a tablespoonful of flour, and any of the following flavourings: orange-flower water, grated lemon-peel, orange-peel, vanilla, or cinnamon: work these ingredients with a wooden spoon into a creamy batter, and then mix in lightly nine whisked whites of eggs; pile this on an earthen dish, or a silver dish, bake it in the oven for a quarter of an hour, sprinkle sugar over it, and serve.