What is Cake Flour?

Cake flour is a highly specialized type of wheat flour, intended for use in making cakes, cookies, and other delicate baked goods. Several characteristics differentiate cake flour from other wheat flours, making it unsuitable for certain tasks like baking bread. Many markets carry cake flour, and in a pinch a substitute can be made with ¾ cup sifted bleached all purpose flour and two tablespoons of cornstarch.

What is Bread Flour?

Bread flour is a high-protein flour, specially formulated for making yeast breads. The combination of extra protein, a tiny bit of malted barley to help the yeast, and vitamin C or potassium bromate to help the formation of the gluten, helps the dough rise and retain gasses as it bakes, resulting in greater volume and better texture.