Daffodil Cake
["1/2 c. flour, sifted", "6 egg whites", "1/2 tsp. cream of tartar", "3/4 c. sugar", "1 tsp. vanilla extract", "1/4 tsp. salt", "6 egg yolks, beaten", "3/4 c. cake flour, sifted", "1 tsp. baking powder", "1/4 c. boiling water", "3/4 c. sugar", "1 tsp. vanilla extract", "pinch of salt"]
["Beat egg whites until foamy; add cream of tartar.", "Beat until stiff.", "Fold in 3/4 cup of sugar; add 1 teaspoon vanilla; add 1/2 cup flour and salt.", "Fold into mixture.", "Pour into ungreased angel cake pan."]
["flour", "egg whites", "cream of tartar", "sugar", "vanilla extract", "salt", "egg yolks", "cake flour", "baking powder", "boiling water", "sugar", "vanilla extract", "salt"]