1 1/4 cups sifted cake flour 1 1/4 teaspoons baking powder 1/2 teaspoon salt 1 cup sugar 2 Eggs -- beaten until thick -- and light 1 tablespoon lemon juice 5 tablespoons boiling water |Sift flour once, measure, add baking powder and salt, and sift together three times. Add sugar gradually to beaten eggs, beating well. Add lemon juice and boiling water; then add flour, mixing thoroughly. Bake in ungreased pan, 8x8x2 inches, in moderate oven (350 degrees) 40 minutes.