h:1 cup flour

Flour is a fine powder produced by grinding cereal grains, most commonly wheat, though it may also be derived from other grains such as rye, barley, corn, or rice. Wheat flour, the most widely used variety, consists primarily of the endosperm of the wheat kernel, which is separated from the bran and germ during milling. The grain is cleaned, tempered with water, and then milled between grinding stones or metal rollers to achieve a uniform, powdery consistency. Common wheat flour varieties differ in protein content—ranging from soft flours (8-9% protein) used for pastries and cakes, to hard flours (12-14% protein) suited for bread-making. The protein gluten, which develops when flour is hydrated and worked, provides elasticity and structure to baked goods.

All-purpose flour, the most versatile type, contains moderate protein levels (10-12%) and is suitable for general baking applications. Specialty flours such as cake flour, bread flour, pastry flour, and whole wheat flour are milled to different specifications and contain varying amounts of bran and germ, affecting their absorption rates, texture, and nutritional profiles.

Flour serves as a fundamental ingredient in baking and cooking across virtually all cuisines. It is the primary structural component in breads, pastries, cakes, cookies, and most grain-based products. Beyond baking, flour functions as a thickening agent in sauces and gravies (as a roux with fat), a coating for fried foods, and a binding agent in various preparations. Different flour types are selected based on desired outcomes: bread flour for chewy, structured loaves; cake flour for tender, delicate crumb; all-purpose flour for everyday baking; whole wheat flour for added nutrition and nuttier flavor.

Proper measuring and technique are essential—flour should be spooned into measuring cups and leveled, not packed, to ensure consistency. Hydration ratios vary by flour type and application, affecting dough development and final texture.