Japan — Kyoto and Kansai region as artisan centre; Tochigi for kori-dofu tradition
Japanese tofu culture distinguishes between a spectrum of textures, production methods, and regional expressions that go far beyond the Western binary of firm and soft. At the foundation, all tofu begins with soy milk coagulated by nigari (magnesium chloride drawn from seawater) or calcium sulphate. The critical variables are soy-to-water ratio (higher concentration yields richer, creamier tofu), coagulant type (nigari produces a slightly bitter, mineral depth; calcium sulphate gives a smoother, milder curd), and draining time. Kinugoshi (silken tofu) is formed directly in its mould without pressing — coagulant is mixed into warm soy milk, which sets undisturbed into a custard-like slab. Momen (cotton) tofu is formed by pressing curds through cotton cloth, expelling whey to create a firmer, more porous structure that absorbs marinades and withstands grilling or frying. Kinu-kinu or extra-fine kinugoshi approaches the texture of chawanmushi. Yaki-dofu is momen tofu that has been charcoal-grilled on all surfaces, producing a lightly blistered skin that prevents the block from dissolving in nabe. Goma-dofu (sesame tofu) is not technically tofu at all — it is kuzu starch cooked with sesame paste into a firm, silky block that mimics tofu texture; standard in shojin ryori. Yuba, the skin that forms on soy milk as it heats, is a separate Kyoto delicacy. Each variety has specific culinary applications and substitution errors are considered fundamental technique failures in Japanese cooking.
Clean sweet soy milk, mineral nigari depth, silky or firm depending on variety, a canvas for dashi, soy sauce, and seasonal garnish
{"Nigari from seawater coagulant produces mineral depth; calcium sulphate coagulant yields milder, smoother curd","Kinugoshi sets without pressing — never refrigerate in water, it dilutes flavour; consume within one to two days","Momen's porous structure is designed to absorb — optimal for agedashi, miso soup, and hiyayakko dressed blocks","Yaki-dofu's grilled skin is a physical barrier — essential for sukiyaki so the block survives long simmering","Goma-dofu requires kuzu starch, not cornstarch — only kuzu achieves the correct translucent, elastic set"}
{"The highest-grade kinugoshi in Japan uses soy beans with protein concentrations above 40% and local well water — flavour is incomparably richer than industrial versions","Hiyayakko (chilled tofu) is seasoned only with katsuobushi, grated ginger, and a few drops of shoyu — any more obscures the bean flavour","Freeze then thaw momen tofu to create kori-dofu (frozen tofu) — the ice crystals leave a spongy, honeycomb structure that soaks up broth in nabe","Artisan tofu producers in Kyoto's Nishiki Market use a two-coagulant technique: small amount of nigari for flavour, calcium sulphate for structural stability"}
{"Using silken tofu in stir-fry or nabe — it shatters; momen or yaki-dofu required","Boiling tofu — the texture turns granular and coarse; warm gently below a simmer","Salting tofu to expel water as with Western fresh cheese — Japanese technique is to press under gentle weight for 30 minutes, which preserves texture","Substituting cornstarch for kuzu in goma-dofu — produces a different, inferior texture without the characteristic translucence"}
Tsuji, S. — Japanese Cooking: A Simple Art; Shurtleff & Aoyagi — The Book of Tofu