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medium-sized yellow onion

ProduceYellow onions are harvested in late summer through fall but remain available year-round due to excellent storage properties; peak availability is September through November in Northern Hemisphere temperate regions.

Yellow onions are a good source of vitamin C, dietary fiber, and quercetin, a polyphenolic antioxidant with potential anti-inflammatory properties. They are naturally low in calories (approximately 40 per 100 grams) and contain prebiotics that support digestive health.

About

The yellow onion (Allium cepa var. cepa) is a bulbous vegetable belonging to the allium family, native to Central Asia and widely cultivated worldwide. Medium-sized yellow onions typically weigh 150-250 grams and are distinguished by their papery, golden-brown skin and pale yellow to white flesh. The bulb consists of concentric layers of modified leaf bases that store carbohydrates and volatile sulfur compounds responsible for the characteristic sharp, pungent aroma when raw. Upon cooking, these compounds break down into sweet-tasting sugars, fundamentally transforming the flavor profile. Yellow onions are the most versatile culinary onion variety, balancing pungency with natural sweetness and maintaining structural integrity through extended cooking.

Culinary Uses

Yellow onions serve as a foundational aromatic in countless cuisines worldwide, forming the base of French mirepoix and Latin sofrito. They are equally suited to raw preparations—sliced thinly in salads or pickled—and prolonged cooking, where caramelization develops deep, complex sweetness ideal for soups, stews, and gravies. Medium-sized yellow onions are the standard for everyday cooking, easily diced for sautéing, roasted whole or halved, or incorporated into braises and curries. Their balanced flavor and reliable texture make them indispensable in both European and Asian cooking traditions.

Forms & Preparations

Diced — Cut into uniform cubes (typically ¼-inch), the standard preparation for sautéing and incorporation into stocks, sauces, and composed dishes.
Sliced — Cut into thin half-moons or rings, used raw in salads and sandwiches or caramelized for French onion soup and gratins.
Minced — Finely chopped into small pieces to distribute flavor throughout dishes or to incorporate into forcemeats and binding agents.
Roasted whole — Halved or left whole and roasted until caramelized and tender, served as a side dish or incorporated into composed plates.
Charred — Briefly exposed to high heat on a grill or over flame to develop bitter-sweet char notes, used in salsas and braises.
Pickled — Thinly sliced and preserved in vinegar-based brine, used as a condiment and garnish for tacos, grain bowls, and charcuterie.