Japanese Goma Sesame Culture Iri Goma Nerigoma and Sesame Sauce

Japan — sesame introduced from China via Korea before the 8th century; suribachi grinding culture from Nara period; goma-ae dressing codified in professional kaiseki cooking from Edo period

Sesame (goma, 胡麻) occupies a central position in Japanese cooking as both a finishing aromatic and a flavour base, with a depth of application spanning from a simple sprinkle of toasted seeds to elaborate sesame-paste dressings (goma-ae) and sesame-based sauces for hot pots and soba. The Japanese sesame vocabulary is nuanced: shiro goma (white sesame), kuro goma (black sesame), and iri goma (toasted sesame) are distinct both in flavour profile and application. White sesame is the most versatile — roasted until golden (kinpira sesame), it provides a nutty warmth without overwhelming. Black sesame has a more intense, slightly bitter, roasted character, used in wagashi (black sesame ice cream, kuro goma mochi), and produces a striking visual contrast as garnish. Nerigoma is sesame paste — Japan's equivalent of tahini, made by stone-grinding toasted sesame until the oil releases and the paste becomes pourable; unlike Middle Eastern tahini which is often made from raw or lightly toasted seeds, nerigoma uses deeper-toasted seeds for more complex, deeply nutty flavour. Goma-ae (sesame dressing) is the most important application: ground toasted sesame, soy, mirin, and sugar combined for dressing blanched spinach, green beans, asparagus, or lotus root. The sesame must be ground by hand in a suribachi (Japanese mortar with ridged interior) — mechanical grinding produces a paste rather than the partially-ground texture that goma-ae requires for its characteristic speckled appearance and layered crunch-cream texture. Toasting sesame: the seeds must be continuously stirred in a dry pan until they pop and become fragrant — the pop indicates the cell walls have opened, releasing the oils.

Freshly toasted and ground sesame for goma-ae presents a warm, intensely nutty aroma and flavour with a layered texture — part paste, part whole seed — that coats blanched vegetables completely and provides satisfying fat richness against the vegetable's freshness