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
{"Finishing oil, not cooking oil: premium roasted sesame oil is for adding at the end — a drizzle over cold tofu, noodles, or aemono; high heat destroys its aromatic complexity","Grind to order: sesame's aromatic compounds are volatile; grinding in a suribachi immediately before use captures full aroma that pre-ground seed cannot match","Toasting level matters: light golden toast (3–4 minutes over medium heat) produces a sweeter, more delicate aroma; deeper toast (dark amber) is more intense and bitter — choose for application","Black vs white sesame: black sesame (kuro goma) has a slightly more bitter, mineral quality and produces the black goma-ae and black sesame ice cream; white sesame (shiro goma) is sweeter and more versatile","Suribachi technique: add a pinch of salt to the sesame before grinding — the salt acts as an abrasive to help the ridges grind the seeds efficiently"}
{"Wadaman sesame oil: Wadaman's gold sesame oil (金ごま) is pressed from an heirloom gold sesame variety — the flavour is sweeter and more complex than standard sesame; use a few drops as the finishing note on dashimaki tamago or cold udon","Sesame tofu (goma dofu) quality indicator: the best goma dofu made with stone-ground sesame has a sandy-smooth, intensely nutty paste — commercial versions using sesame seed powder are flat by comparison","Goma-dare (sesame dipping sauce): blend toasted sesame paste, dashi, soy, rice vinegar, mirin, and grated ginger — the depth depends entirely on the quality of the sesame paste; use premium nerigoma","Black sesame ice cream (kuro goma ice cream): grind black sesame to a fine paste, combine with custard base, churn; the bitterness of black sesame balanced against cream sweetness is one of Japan's most distinctive dessert flavours","Suribachi vs food processor: a suribachi grinding over 3–4 minutes produces a coarser, more aromatic paste with more texture — visually and texturally superior in goma-ae; food processor is faster but produces a smoother result with less aromatic lift"}
{"Adding roasted sesame oil to the wok at the start of cooking: it burns and loses all aromatic value above 180°C; add only at the end or as a finishing drizzle","Using pre-ground sesame (nerigoma from a jar) without toasting: commercial nerigoma is produced from raw or lightly toasted sesame; dry-toasting the jar's contents before using releases additional aroma","Not distinguishing dark sesame oil from light: Chinese dark sesame oil and Japanese finishing sesame oil are different products with different applications — Chinese is more intense and sometimes used in cooking","Over-grinding sesame in a blender: blender processing overheats the seeds and produces a paste without the aromatic lift of suribachi grinding","Storing sesame oil at room temperature in sunlight: high polyunsaturated fat content makes sesame oil prone to rancidity; store in a cool, dark place or refrigerate"}
Japanese Farm Food (Nancy Singleton Hachisu); The Japanese Pantry (Sonoko Sakai); Tsuji Japanese Cooking: A Simple Art