rounded tablespoons cornstarch

GrainsYear-round

Cornstarch is predominantly carbohydrates (nearly 100% when dry) with minimal protein, fat, or micronutrients; it provides quick energy through easily digestible simple sugars when gelatinized but is not a significant source of fiber or essential nutrients.

About

Cornstarch, also known as corn flour or maize starch, is a fine, powdery carbohydrate extracted from the endosperm of corn (maize) kernels through wet milling and processing. It is a nearly pure starch composed primarily of amylose and amylopectin polysaccharides, appearing as a pristine white powder with a silky texture and neutral flavor profile. The production process involves separating the starch from other corn components, resulting in a product free from protein, fat, and fiber.

Cornstarch is distinguished from cornmeal by its extreme fineness and purity; it contains virtually no fiber or protein, making it an ideal thickening and binding agent. Its gelatinization temperature (approximately 62-72°C / 144-162°F) and high viscosity when heated make it particularly valued in culinary applications requiring clarity and smooth texture.

Culinary Uses

Cornstarch serves as a versatile thickening agent in sauces, gravies, soups, and desserts, where it produces a glossy, translucent finish without cloudiness. It is essential in Asian cuisines, particularly Chinese and Thai cooking, for velveting meat and creating silky sauces. In baking and pastry work, cornstarch reduces gluten development, producing tender cakes and cookies, and is used in puddings, custards, and fruit fillings. It also functions as a dusting agent for doughs and a coating for fried foods, and serves as a binding component in spice rubs and seasoning blends.

Forms & Preparations

  • Powder — The standard form—fine, white powder used directly as a thickening agent by mixing into cold liquid before adding to hot preparations.
  • Slurry — Cornstarch mixed with cold water, broth, or other liquid to create a smooth paste before incorporation into sauces or soups to prevent lumping.
  • Dusting powder — Applied directly to dough surfaces, baking pans, or fried foods to prevent sticking and create a light, crisp coating.
  • Baking blend — Combined with wheat flour in cake and cookie recipes to reduce gluten and produce tender, delicate crumb structure.
  • Velveting agent — Mixed into a paste with soy sauce, egg white, and seasonings to coat proteins before stir-frying, creating a silky surface texture.