Negi Japanese Leek Varieties and Preparation

Japan — Welsh onion (Allium fistulosum) cultivation from ancient times; regional variety development through Edo period; the shiro/ao negi divide correlates with the regional flavour philosophies of Kanto and Kansai

Negi (ネギ, Allium fistulosum, Japanese bunching onion/Welsh onion) is one of the most versatile and culturally embedded ingredients in Japanese cooking — appearing as an aromatic base in every category of preparation. Two main varieties exist in Japanese cooking: Shiro negi (white negi, 白ネギ) from Kanto — thick, the majority of the stalk is pale white with minimal green, sweet when grilled or braised, pungent when raw; and Ao negi (green negi, 青ネギ) from Kansai — thin, completely green, milder, used primarily as a fresh garnish scattered over soups, noodles, and rice bowls. The regional divide in negi preference mirrors the Kanto-Kansai culinary divide — Tokyo cooks default to thick white negi, Osaka to thin green negi.

Raw: sharp, pungent, allium heat; grilled: extraordinarily sweet, yielding, charred exterior giving way to silky interior; as garnish: fresh sharp onion note that lifts the surrounding preparation