flour

Flour is a fine powder produced by grinding cereal grains, legumes, or other starchy plants into a meal and then refining it to remove coarser particles. Wheat flour, the most common variety in Western cuisines, derives from the endosperm of wheat berries (Triticum aestivum or related species) and contains the starch, proteins (particularly gluten), and nutrients that make it suitable for baking and cooking. The character of flour varies significantly based on the wheat variety used, milling process, and degree of refinement; whole wheat flour retains the bran and germ, while all-purpose and bread flours are refined endosperm products with varying protein content (typically 10-14% protein). Regional traditions employ flour from diverse sources: rice flour in East and Southeast Asian cuisines, corn flour in the Americas, rye flour in Northern Europe, and chickpea flour in South Asian cuisines.

Flour functions as a foundational ingredient across global cuisines, serving as the primary structural component in breads, pastries, pasta, and batters. In baking, the protein networks formed during hydration and kneading (particularly gluten in wheat flour) develop elasticity and strength essential to leavened breads, tender cakes, and crisp pastries. Flour thickens sauces, stews, and gravies through the starch gelatinization that occurs during cooking, and it serves as a coating for fried foods, providing crispness and sealing moisture. Different flour types are matched to specific applications: bread flour (high protein) for chewy loaves, cake flour (low protein) for tender crumbs, and all-purpose flour for versatile everyday cooking.