Japanese Negi (Long Onion)

What it is

Allium fistulosum, the Japanese long onion / Welsh onion — a thick, long, single-stalked allium with a long white shaft and green top, far larger and meatier than a Western scallion. Naganegi/tokyo negi is the thick white-shafted type; banno negi/aonegi are thinner, greener Kansai-style types closer to a scallion. It is not the same as a Western green onion, though they overlap.

How it's made

Grown with soil mounded up the stalk (hilling/blanching) to lengthen and whiten the tender lower shaft. It does not form a bulb (it's a bunching onion). The whitened shaft is the prized part; the green tops are used too.

Flavor profile

Sweeter, milder, and more succulent than a Western onion, with a clean oniony sharpness raw that turns silky, sweet, and almost melting when grilled or simmered. The thick white part is juicy and substantial — more vegetable than garnish.

Culinary uses

Grilled as negima yakitori (alternating with chicken), simmered in sukiyaki, nabe hot pots, and oden; finely shredded raw into shiraga negi ("white-hair negi") garnish; sliced into miso soup, ramen, and as a condiment (negi topping). The green and white parts are used differently. Pairs with miso, soy, chicken, tuna (negitoro), and dashi.

Regional variations

Kanto/Tokyo favors the thick white naganegi; Kansai favors greener, thinner aonegi. Korea's large green onion (daepa, see [Korean Pa]) and China's "big scallion" (da cong) are close relatives used similarly. Western "scallions/green onions" are typically the thinner, younger form of the same or related species.

Cultural & historical context

The Welsh onion/fistulosum is an ancient East Asian cultivated allium (despite the "Welsh" name, which comes from an old word for "foreign"). In Japan, negi is a daily staple aromatic and a hot-pot essential, with regional pride attached to local types (e.g., Shimonita negi).

Substitution & sourcing — A bunch of Western scallions can stand in for thin negi, but for the thick grilled/simmered white shaft, leeks (milder, needs more cooking) or the thickest scallions are the nearest swap — neither is exact. Buy at Japanese, Korean, and Chinese groceries (often sold as "long onion" or "naganegi"). Choose firm stalks with crisp whites and fresh greens.

Reference notes

Tags: `allium`, `bunching-onion`, `japanese`, `not-quite-scallion`. Related ingredients: [Korean Pa], [Chives], [Garlic Chives], [Chives]. Related cuisines: Japanese, Korean, Chinese. Suggested links: the negi-vs-scallion-vs-daepa cluster; a shiraga negi knife-technique note.