medium-sized onions

ProduceYear-round. Fresh onions peak in summer through early fall; stored onions remain available throughout winter and spring when kept in cool, dark conditions.

Low in calories but rich in vitamin C, manganese, and quercetin, an antioxidant with potential anti-inflammatory properties. A medium onion provides approximately 3–4 grams of fiber and negligible fat.

About

The onion (Allium cepa) is a bulbous perennial plant in the amaryllis family, native to Central and South Asia and cultivated worldwide for millennia. Medium-sized onions typically weigh 150–250 grams and are harvested at mid-maturity, offering a balance between pungency and sweetness. The characteristic layered bulb contains fleshy, water-rich scales protected by papery outer skin; varieties include yellow, red, and white onions. Yellow onions, the most common culinary variety, develop deeper sweetness when cooked, while red onions retain a sharper edge and white onions offer a milder profile. The pungent aroma and tear-inducing compounds (particularly syn-propanethial S-oxide) dissipate with heat and storage.

Culinary Uses

Medium-sized onions serve as a fundamental aromatic base in countless cuisines, particularly in mirepoix (French), soffritto (Italian), and holy trinity (Cajun) preparations. They are caramelized for depth, roasted whole, grilled, pickled, or eaten raw in salads and salsas. A single medium onion typically yields 150–180 grams of usable flesh once trimmed, making it convenient for standard recipe portions. Onions pair effectively with alliums, tomatoes, garlic, and vinegar, and feature prominently in soups, stews, stir-fries, and braises. Their natural sugars—enhanced by long, slow cooking—make them valuable for building savory foundations.

Forms & Preparations

  • Diced — Cut into uniform 6–12 mm cubes for even cooking in soups, stews, and sauces.
  • Sliced — Thin or thick rings, used for caramelizing, roasting, or raw applications like burgers and sandwiches.
  • Minced — Finely chopped to distribute onion throughout dishes and maximize surface area for cooking.
  • Halved or quartered — Large pieces for roasting whole, grilling, or braising with proteins.
  • Julienned — Thin, matchstick cuts for stir-fries and Asian dishes where quick cooking is desired.
  • Caramelized — Slow-cooked until deep brown and sweet, concentrated in flavor for gratins, soups, and tarts.

Substitutes

  • Unknown — Use at a 1:1 ratio by weight; offer a more refined, less pungent flavor; ideal for vinaigrettes and refined sauces.
  • Unknown — Use white and light-green portions in 1:1 ratio; milder and sweeter; best in creamed soups and braises.
  • Unknown — Use 6–8 cloves per onion; much more assertive; employ selectively in dishes where garlic flavor is desired.
  • Unknown — Use 6–8 scallions per onion; milder and fresher; best added raw or at dish end for textural contrast.

Recipes Using medium-sized onions (5)

RCI-SP.003.0031.001

Arabian Chickpea Soup

This thick, stewlike soup is eaten in many countries of the Middle East, often forming the centerpiece of simple peasant meals. Salads, , bread, and yogurt dishes are served on the side.

RCI-SP.004.0014.001

Artichoke Stew

Makes about eight portions.

RCI-SP.004.0181.002

Irish Stew

Irish Stew is a traditional Irish dish made from lamb or mutton as well as potatoes, onions and parsley. It originated in Ireland but appears in cookbooks all over Europe, including in Escoffier's Guide Culinaire.

RCI-SC.006.0032.001

Southern Chadian Peanut Sauce

Southern Chadian Peanut Sauce from the Recidemia collection

RCI-SP.003.0712.001

Vege Chili

I served over brown rice and provided bowls of hot sauce, fat-free sour cream, chopped jalapeno peppers, and chopped onions. I also had a loaf of wheat bread and several people ate their chili with that instead of the rice. Yum yum.