one egg

An egg is the reproductive body produced by a female bird, most commonly the domesticated chicken (Gallus gallus domesticus). Composed of a hard, porous calcium carbonate shell encasing the albumen (egg white), yolk, and chalaza, eggs are one of nature's most complete food sources. The yolk ranges from pale yellow to deep orange depending on the hen's diet and breed, while the white remains clear to opaque when raw. Chicken eggs are by far the most commonly consumed variety, though duck, quail, and goose eggs are also used culinarily. The flavor is mild and neutral, allowing eggs to function both as a primary ingredient and as a binding or leavening agent in countless preparations.

Eggs are fundamental to kitchens worldwide and are used in three primary capacities: as a complete dish (boiled, fried, scrambled, poached, baked), as a binding agent in savory preparations (meatloaf, forcemeats, custards), and as a leavening and emulsifying agent in baked goods and sauces. In French cuisine, eggs form the basis of numerous classical preparations including mayonnaise, hollandaise, and soufflés. In Asian cuisines, they appear in stir-fries, fried rice, and steamed custards. Eggs are also essential in pastry work, contributing structure, moisture, and rise to cakes, meringues, and pastry creams. The versatility of eggs—raw, cooked slowly, or cooked quickly—makes them indispensable across culinary traditions.