The bran is the hard outer layer of the The bran is the hard outer layer of the wheat kernel, which is jam-packed with various nutrients and fiber. During the milling process, the bran is stripped away from the wheat kernel and becomes a byproduct. Wheat bran has a sweet, nutty flavor. During the milling process, the bran is stripped away from the wheat kernel and becomes a byproduct. Wheat bran has a sweet, nutty flavor.