Our organic whole durum wheat flour comes predominantly from the Rocky Mountains region of the US (Montana and, in minor quantities, Colorado and Utah) and is a blend of different flours. We use a semi-refined “semolato” of durum wheat (around 80-85%), that allows the full, earthy flavor of the whole grain to come through without the harsh bitterness and texture associated with whole wheat.
The word “whole” refers to the fact that all of the grain (germ and endosperm) is used and nothing is lost in the process of making the flour. This is in contrast to white, refined flours that contain only the endosperm–the internal part of the grain–which is rich in starches and proteins. Because the whole flour contains the remains of all of the grain, it has a more textured, brownish appearance.
Read more here: Durum