Tofu Varieties and Regional Styles

Japan — tofu arrived from China in the Nara period (710–794 CE); Japanese refinement of variety and production technique developed over subsequent centuries

Tofu, while often treated as a single ingredient in Western cooking, encompasses a vast range of textures, flavours, and production methods in Japan — each variety with specific culinary applications where it excels and other preparations where it fails. The production process determines tofu's character: soymilk is coagulated using nigari (bittern, primarily magnesium chloride from sea salt production — traditional) or calcium sulfate (gypsum — produces softer, smoother texture), then pressed to varying degrees. Silken tofu (kinugoshi dofu) is unpressed, setting in the final container, producing a custard-smooth, high-moisture block ideal for cold preparations, hot soups where it will be handled minimally, and smoothed sauces. Firm tofu (momen dofu — cotton tofu, from the cotton cloth used in pressing) is pressed to remove moisture, producing a denser, more textured block that can be sliced, pan-fried, grilled, or crumbled. Regional tofu traditions produce distinct varieties: Kyoto dofu (particularly from shops in Fushimi and Arashiyama) uses local spring water of exceptional mineral quality, producing tofu with a sweet, clean flavour; Okinawa's island tofu (shima-dofu) is extremely firm and dense, pressed further than mainland momen, suitable for stir-frying; Koya-dofu (freeze-dried tofu from Koyasan) is the most transformed variety — reconstituting with water and absorbing surrounding flavours like no other ingredient. Yaki-dofu (grilled tofu) is firm tofu with a lightly charred surface, used in sukiyaki and other simmered preparations where the grilled surface prevents the tofu from disintegrating.

Quality Japanese tofu has a subtle but distinct flavour — sweet, clean, faintly nutty from the soybeans — that is entirely dependent on the soy quality and water character. Artisanal tofu made from heritage soybeans with spring water has a flavour entirely different from mass-produced equivalents.