Directions:
One lemon; grate the yellow rind and squeeze the juice. One scant cup sugar, two tablespoons of flour (rounded full), the yolks of two eggs, beat until light; then add one and a half cups of boiling water, in which has been melted a heaping tablespoonful of butter; lastly, add three drops of vanilla extract. When baked, cover with the whites of two eggs, beaten to a stiff froth with four tablespoonfuls of sugar.
Return to the oven until it is a very delicate brown. This makes two small pies, or one large one.