onion - 1 small
Onions are a good source of vitamin C, manganese, and fiber, with notable prebiotic compounds (inulin) that support digestive health. They also contain quercetin and other polyphenolic antioxidants.
About
The onion (Allium cepa) is a bulbous herbaceous plant native to Central Asia, belonging to the allium family alongside garlic, leeks, and chives. The edible bulb consists of layers of fleshy scales wrapped in papery, often colored outer skin, with a white, yellow, or red interior depending on variety. Onions are characterized by their pungent, sulfurous volatile compounds that intensify when raw but mellow and sweeten substantially when cooked. Major cultivated varieties include yellow onions (the most common all-purpose type), red or purple onions (milder, with a slight sweetness), and white onions (delicate, often preferred for fresh applications).
Culinary Uses
Onions serve as a foundational aromatic in cuisines worldwide, appearing in mirepoix (French), soffritto (Italian), and the holy trinity (Creole). They are sautéed or caramelized as a base for soups, stews, and braises; grilled or roasted whole or sliced as a side dish; pickled for condiments; and used raw in salsas, salads, and relishes where their sharp bite provides textural contrast. Caramelized onions undergo a lengthy cooking process that converts their sulfur compounds into sweet, complex sugars, creating a deeply flavored accompaniment to meats, gratins, and composed dishes.