White flour is wheat flour that has been stripped of two main components–the bran and the germ. [1] The bran provides the fiber that is typically found in the whole grain, but when it is taken out of the wheat flour it creates a softer, lighter texture. This is why, if you’ve ever replaced white flour for whole-wheat flour, the final product is often heavier and denser. That’s the fiber and the added weight of the other components missing from white flour. The trouble is, the light and airy texture of the bread is fairly descriptive of its nutritional quality as well–light, airy, and vapid.
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