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medium-size yellow onion

ProduceYear-round. Yellow onions are harvested in late summer and early fall across major growing regions, with excellent storage capacity allowing consistent availability throughout the year in most markets.

Yellow onions are low in calories (approximately 40 calories per 100g) and provide dietary fiber, vitamin C, and quercetin, a polyphenolic antioxidant with potential anti-inflammatory properties.

About

The yellow onion (Allium cepa var. cepa) is a bulbous member of the allium family, native to Central Asia and cultivated worldwide. Medium-size yellow onions typically weigh 150-250 grams and feature a papery golden-brown outer skin enclosing layers of pale yellow to white flesh. The variety is characterized by a balanced sweet and pungent flavor profile, with raw specimens offering sharp, sulfurous notes that mellow considerably when cooked through caramelization and the breakdown of volatile sulfur compounds. This ubiquitous cultivar is the most common onion variety in temperate cuisine due to its versatility, storage longevity, and reliable flavor development across cooking methods.

Culinary Uses

Yellow onions serve as foundational aromatics across global cuisines, used as a base for stocks, soups, sauces, and braises. The medium size is ideal for even cooking and portion control in home kitchens. When diced and sautéed, they develop deep caramelized sweetness over 30-45 minutes, forming the flavor foundation for French onion soup, mirepoix, and soffritto. Raw, they add sharp bite to salsas, salads, and pickles. They pair universally with garlic, bell peppers, proteins, and fats, and are essential to mirepoix (with carrot and celery) and similar aromatic bases in Western cooking.

Forms & Preparations

Diced — Cut into small uniform cubes (¼- to ½-inch), used for sautéing as an aromatic base and in salsas and relishes.
Sliced — Cut into thin or thick rings or half-moons, ideal for caramelizing, grilling, or using as a raw garnish.
Minced — Finely chopped into small pieces, used for dense flavor distribution in raw preparations like salsas or in strongly flavored dishes.
Whole/Quartered — Left whole or cut into large wedges for roasting, braising, or adding to stocks for subtle flavor.
Caramelized — Slowly cooked with butter or oil over low heat until deeply browned and sweet, concentrated in flavor and texture.
Pickled — Sliced and preserved in vinegar brine with spices, used as a condiment or component in composed dishes.