Photo by Scot Nelson on Wikimedia Commons (CC0 1.0)

onion; mince

ProduceYear-round availability in most regions, with peak harvest in late summer and fall (June–October in Northern Hemisphere). Sweet varieties (Vidalia, Maui) have shorter seasons (spring–early summer) and limited availability outside their growing regions.

Onions are low in calories and contain prebiotic fiber (inulin) that supports digestive health; they are also a good source of vitamin C, antioxidants (including quercetin), and sulfur compounds with potential anti-inflammatory properties.

About

The onion (Allium cepa) is a bulbous plant in the Amaryllidaceae family, native to Central Asia and widely cultivated globally. Characterized by concentric layers of fleshy, starch-rich leaves enclosed in papery outer skin, onions range in color from white to yellow, red, and purple. The flavor profile transforms dramatically with cooking: raw onions deliver sharp, pungent sulfur compounds; when heated, these convert to sweet, caramelized sugars. Major varieties include yellow (Walla Walla, Spanish), red (Red Baron, Torpedo), white (Boiling, Texas), and sweet types (Vidalia, Maui).

Culinary Uses

Onions serve as a foundational aromatic in countless cuisines, providing savory depth and umami to soups, stews, stocks, and sauces. They appear raw in salads, salsas, and pickled preparations, where their sharp bite provides textural and flavor contrast. Grilled, roasted, or caramelized, onions become sweet and mellow, suitable for gratins, burgers, and French onion soup. Their versatility extends from Asian stir-fries to Mediterranean braises, Middle Eastern kebabs, and Latin American sofrito bases.

Forms & Preparations

Minced — Finely chopped into small, uniform pieces; used as a base for sauces, stocks, and as a garnish for cooked dishes.
Diced — Cut into roughly 1/4-inch cubes; the standard cut for sautéing in sofrito, mirepoix, and soup bases.
Sliced — Cut into rings or half-moons; used raw in salads, sandwiches, or cooked for caramelizing and grilling.
Caramelized — Slowly cooked over low heat for 30–45 minutes until deeply browned and sweet; used in French onion soup and as a condiment.
Roasted — Halved or quartered and roasted whole at high temperature; develops sweet, charred exterior; served as a side or component.
Pickled — Sliced and preserved in vinegar and spices; used as a condiment, garnish, or component in ceviche and tacos.