Japanese Sesame Cultivation and Goma Oil Hierarchy

Japan (sesame introduced from China and India, documented in Japan from Nara period; Wadaman established 1883 in Osaka; stone-milling tradition maintained as artisan practice)

Sesame (胡麻, goma) occupies a unique position in Japanese cuisine — simultaneously a seed, a paste, a finishing oil, and a toasted flavour agent — with a hierarchy of forms that parallels olive oil's distinction between extra-virgin and refined grades. Japanese sesame culture centres on three distinct products: raw sesame seeds (nama goma), used for paste production; toasted sesame seeds (iri goma), used as a garnish and flavour agent; and sesame oil (goma abura), produced in two primary grades — roasted sesame oil (the amber, fragrant, finishing oil pressed from toasted seeds) and pure/refined sesame oil (pressed from raw seeds, lighter in colour and flavour, used for cooking). The most prized sesame oil producer in Japan is Wadaman (和田萬, Osaka, established 1883), whose stone-milled, single-origin sesame oils have near-cult status among Japanese chefs. Japanese culinary tradition distinguishes clearly between cooking with sesame oil (which burns and loses aroma above 180°C) and using it as a finishing drizzle — unlike in Chinese cooking where sesame oil is added to stir-fries. Suribachi grinding of toasted sesame — the Japanese mortar with ridged inner walls — is considered essential for releasing the full aromatic spectrum of the sesame before use in goma-ae, goma tofu, and sesame dressings.

Toasted: deep, nutty, warm, slightly smoky with sweet aromatics; raw: mild, clean, slightly floral; black sesame: more bitter and mineral; all forms share a characteristic richness that adds depth without heaviness