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Scallions

Scallions

Also known as: Green Onions, Cong, Spring Onions, Allium fistulosum, Welsh Onion

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Scallions — also called green onions or spring onions — are the most universally used aromatic in Chinese cooking. The white base delivers sharp, onion-like pungency; the green tops contribute mild, grassy freshness. They appear raw as a garnish, cooked as an aromatic base, and deep-fried as a crispy condiment.

No Chinese kitchen is without them. In Chinese culinary tradition, scallion, garlic, and ginger form the essential aromatic trinity on which the flavor of most dishes is built.

Key facts at a glance:

  • Most universal Chinese aromatic — appearing in virtually every style of Chinese cooking
  • Dual-purpose structure — white base for pungency, green tops for freshness
  • Part of the aromatic trinity — with garlic and ginger, the foundation of Chinese flavor
  • Cultivated over 3,000 years — Allium fistulosum, the Welsh onion
  • Rich in quercetin and kaempferol — flavonoids with anti-inflammatory properties

Flavor Profile

sharponion-likefreshmildgrassy

Origin

China, East Asia, Shandong

Traditional Medicine Perspectives

Traditional Chinese Medicine

Scallion (Cong Bai — specifically the white base) is classified as warm and acrid in TCM, associated with the Lung and Stomach meridians. It is used to release the exterior, dispel wind-cold, and unblock Yang Qi. It is a common home remedy for early-stage colds — simmered with ginger in a warming broth. The green tops (Cong Ye) are considered more cooling and are used differently in some formulas.

Modern Scientific Research

Scallions contain flavonoids, vitamin K, vitamin C, and organosulfur compounds. Research suggests the quercetin and kaempferol content may have anti-inflammatory and antioxidant effects.

Like other alliums, scallions contain fructooligosaccharides that function as prebiotics, supporting gut microbiome health. The green tops are particularly rich in chlorophyll and carotenoids.

Cultural History

Scallions have been cultivated in China for over three thousand years and are deeply embedded in Chinese food culture at every level from home cooking to banquet cuisine. The Welsh onion (Allium fistulosum), the variety most commonly used in Chinese cooking, was cultivated in East Asia long before its name acquired any connection to Wales.

In northern Chinese cuisine, scallions are used raw in substantial quantities — rolled into pancakes, layered into flatbreads, and eaten alongside rich meats as a palate cleanser. In Shandong province, the large, thick scallions known as da cong are a defining regional ingredient.

The da cong of Shandong province are a defining regional ingredient — eaten raw alongside rich meats and used as a fundamental aromatic in one of China's foundational culinary traditions.

Culinary Uses

Use white parts as an aromatic base in stir-fries, soups, and braises. Add green tops as a raw garnish at the end of cooking.

Use both parts in dumpling fillings. Make scallion oil (cong you) by frying scallions in oil until golden — a foundational flavoring in Shanghainese and Cantonese cooking. Roll into pancakes and flatbreads in northern Chinese cooking.

Preparation Methods

Separate white and green parts — they are used differently. Slice on the diagonal for garnishes. Mince finely for fillings and sauces.

Bruise the white part before adding to stocks and braises to release flavor. Keep the green tops for finishing.

Traditional Dishes

Recipes Using Scallions

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