Oh, come on, self-rising cake flour is available everywhere! You can get it at 7-11, can't you? Oh wait, it's cookbook writers who specify ingredients that have not existed since the dawn of time and are baffled that people only make three recipes from their $35 cookbook that are available everywhere. Silly us.

Self-rising flour is all-purpose flour to which baking powder and salt have been added. To make your own, add 1-1/2 teaspoons of baking powder and 1 teaspoon of salt to a scant cup of flour. Use the same ratio for homemade self-rising cake flour.