Cake Flour

Cake flour is a very finely milled white flour made from wheat that has less protein than other wheat varieties. Traditionally, cake flour is also very heavily bleached (though unbleached versions do exist), which makes it softer and produces a flour that is slightly acidic. This imparts a subtle flavor that can be very desirable in some cakes. As its name suggests, cake flour is best used for cakes and delicate pastries.