eggs - 3
Eggs are a complete protein source containing all nine essential amino acids, along with choline, selenium, and lutein; the yolk is particularly nutrient-dense, though also contains dietary cholesterol.
About
An egg is the reproductive body produced by female fowl, most commonly the domestic chicken (Gallus gallus domesticus), consisting of a hard calcareous shell, a protective albumen or white, and a nutrient-rich yolk. Eggs are characterized by their ovoid shape and range in color from white to brown depending on the breed of hen. The composition of an egg—approximately 10% shell, 60% white, and 30% yolk—provides distinct culinary properties. The white is primarily water and protein (ovalbumin), while the yolk contains fat, cholesterol, lecithin, and fat-soluble vitamins, giving it a rich, emulsifying quality essential in cooking.
Eggs vary in size, typically categorized as small, medium, large, and extra-large, with regional standards differing by country. The flavor and nutritional profile can vary based on hen diet and living conditions, with free-range and pasture-raised eggs often exhibiting deeper orange yolks and richer flavor than conventional eggs.
Culinary Uses
Eggs are a foundational ingredient in kitchens worldwide, functioning as a binder, leavening agent, emulsifier, and thickener. Raw or cooked whole, they serve as breakfast staples (fried, scrambled, poached, boiled, baked). In baking, eggs provide structure, moisture, and lift to cakes, pastries, and breads. The white and yolk perform distinct functions: whites are whipped for mousses and meringues; yolks emulsify mayonnaise, hollandaise, and custards. Eggs also coat foods for frying, bind meatballs and croquettes, and enrich sauces and pasta doughs. Across cuisines—from French omelets to Chinese egg fried rice to Japanese tamagoyaki—eggs remain indispensable.