Japan — tofu introduced from China via Buddhist monks 8th century; regional varieties developed Heian–Edo period; kori dofu origin Koya-san monastery
Tofu in Japan encompasses a spectrum far wider than the firm-or-silken binary familiar outside Japan, with regional traditions, artisan approaches, and specialty formats representing centuries of coagulation technique refinement. The fundamental distinction is between kinugoshi (silk tofu) and momen (cotton tofu): kinugoshi uses unseparated soy milk coagulated in the final container, producing impossibly smooth custard-like texture; momen wraps curds in cotton cloth and presses moisture out, creating a more robust, textured body. Nigari (natural bittern from sea salt crystallisation) is the traditional coagulant, delivering mineral depth absent from sulphate-set industrial tofu. Suribachi-ground nigari, hand-squeezed from the cloth of specific Pacific currents, is the mark of artisan production. Beyond these: oboro tofu (Kyoto) is unset loose curd scooped directly from the coagulation vat — eaten fresh from small buckets with dashi and soy, it has a lifespan of hours; yaki dofu is lightly grilled after pressing to create a firm, seared exterior that withstands simmering in nabemono; ganmodoki are fried tofu fritters incorporating vegetables, hijiki seaweed, and ginkgo nuts in a form that absorbs braising liquid beautifully. Kori dofu (freeze-dried tofu, also kohya dofu) is compressed, dried, and reconstituted — created originally at Koya-san mountain monastery where winter temperatures froze and dried stored tofu naturally. Its sponge-like texture after reconstitution absorbs dashi profoundly. Premium producers: Yamaki Jozo (Kyoto), Sagami Tofu (Tokyo), Otokomae Tofu (Osaka).
Artisan nigari-set tofu delivers a sweet, clean soy flavour with mineral depth absent from industrial products — texture ranges from trembling custard to firm, close-grained protein that grills without crumbling
{"Kinugoshi: unseparated soy milk coagulated in container — smooth custard, delicate, cold service ideal","Momen: curds wrapped in cotton cloth and pressed — textured, robust, suited for grilling and simmering","Nigari (bittern) coagulant delivers mineral depth; sulphate (gypsum) produces cleaner but flatter flavour","Oboro tofu is fresh uncurdled soy curd — hours-fresh only, sold in Kyoto from the vat","Yaki dofu: momen grilled after pressing — seared exterior allows nabemono simmering without disintegration","Ganmodoki: fried tofu fritters with vegetables and seaweed — absorb braising liquid for nimono use","Kori dofu (kohya dofu): freeze-dried tofu reconstituted with dashi — sponge-like dashi absorption","Kori dofu origin: Koya-san Buddhist monastery winter natural freeze-drying of surplus tofu","Regional artisan producers (Yamaki Jozo, Sagami) use specific nigari source and bean variety","Otokomae Tofu brand elevated domestic premium tofu culture with packaging and quality storytelling"}
{"Source oboro tofu from small Kyoto tofu-ya (tofu maker) early morning — by afternoon, it has set and lost its character","For premium agedashi tofu: use kinugoshi from nigari-set producer, dust with katakuriko (potato starch), fry at 175°C","Kori dofu reconstituted in 1:1 dashi/mirin produces extraordinary result for nimono side dishes","Ganmodoki absorbs braising liquid fully only when chilled then reheated — make ahead and reheat in tsuyu","A single sheet of kombu under kinugoshi in cold water for 2 hours infuses subtle marine mineral character"}
{"Using kinugoshi in stir-fry or nabemono — too delicate, will disintegrate; momen or yaki dofu required","Overcooking oboro tofu — it requires minimal heat; excess warmth causes protein to tighten and lose its custard quality","Reconstituting kori dofu in cold water — warm dashi produces both hydration and flavour simultaneously","Assuming nigari-set artisan tofu lasts as long as commercial — shorter shelf life, consume within 2 days","Serving ganmodoki cold — always served warm from light dashi simmer to activate flavour absorption"}
Tsuji Shizuo — Japanese Cooking: A Simple Art