Wheat flour

Wheat flour is what a miller chose to keep from a wheat kernel and grind to a baking powder. In the usual white flour, that choice is mostly endosperm. Whole wheat flour keeps the kernel’s parts in the food. Neither bag is “wheat” the plant — that is Wheat — and neither bag is Gluten yet. Gluten is a network the baker develops with water and work.

In U.S. food law, cereal flours are standardized foods. Wheat flours and related products are grouped in 21 CFR Part 137 ¹. The legal names on a bag (flour, bread flour, whole wheat flour) are identity standards, not mill-brand poetry.

Why bakers care #

Flour is the structure, the food for fermentation, and most of the flavor of a lean loaf. Protein content is a useful clue and a poor religion. Calvel’s account of breadmaking flour is about behavior in dough — gluten, ash, enzymes — not a single number to worship ².

Ash, measured as inorganic residue after combustion, is an indirect indicator of residual bran because those minerals are more concentrated in bran than in endosperm ³. A baker who only reads protein is missing the mill’s cleanliness story. How the kernel was opened, sieved, and blended is Milling.

What to notice in dough #

Protein on the spec sheet predicts tendency, not a loaf.

Absorption — how much Water a flour will hold while remaining shapable — moves with protein, damaged starch, and bran. The same “75% hydration” country formula is a different dough in August with a new lot. Adjust water to the flour in front of you; do not treat a percentage as a moral rule.

Salt tightens gluten and slows fermentation. It is not a flour substitute.

Professional reading of a spec #

Connections #

See Wheat for the plant, Milling for streams and extraction, Gluten for the network, and Sourdough for a craft that depends on all three. The teaching loaf that uses this ingredient by weight is the Country loaf (teaching formula).