.5 onions

The onion (Allium cepa) is a bulbous plant in the amaryllis family, native to Central Asia, now cultivated worldwide as a fundamental culinary vegetable. The bulb consists of concentric layers of fleshy scales wrapped in papery outer skin, ranging in color from pale yellow to deep purple depending on variety. Onions possess a pungent, sharp flavor when raw that mellows and becomes sweet when cooked, due to the breakdown of sulfur compounds and the caramelization of natural sugars. Major cultivars include yellow (most pungent), white (milder, crisper), and red varieties (slightly sweet, used raw or pickled). The flavor intensity and texture vary with age, storage duration, and cultivation conditions.

Onions serve as an aromatics base in countless culinary traditions, providing foundational flavor to stocks, soups, stews, and sauces across European, Asian, and global cuisines. They are sautéed as a primary building block in soffritto, mirepoix, and similar vegetable foundations, caramelized for depth in gratins and French onion soup, and used raw in salsas, pickles, and salads for pungency. Roasting, grilling, and pickling are common preparation methods. Yellow onions are preferred for cooking, white for fresh applications and Mexican cuisine, and red for raw use and visual appeal.