Ohitashi Blanched Vegetable Dashi Soaking

Japan (nationwide; foundational technique in home cooking and kaiseki; associated with daily ichiju sansai practice)

Ohitashi (お浸し, 'soaked thing') is one of Japan's most fundamental vegetable preparations — a technique of blanching, pressing, and soaking green vegetables in a seasoned dashi mixture to create a dish that is simultaneously a vegetable preparation and a vehicle for dashi delivery. Standard ohitashi preparation: spinach (or komatsuna, mizuna, chrysanthemum, or asparagus) blanched for 30–60 seconds in heavily salted boiling water, immediately shocked in ice water, then firmly pressed into a tight cylinder to extract excess moisture. The cylinders are soaked in a cold mixture of dashi, light soy sauce, and mirin (typically 3:1:0.5 ratio or similar) for 30 minutes to overnight — the compressed vegetable fibres absorbing the flavoured dashi as the osmotic pressure equalises. The cylinder is then sliced into 3–4cm rounds and plated with a decorative arrangement of katsuobushi and sesame. Ohitashi demonstrates Japan's understanding that vegetables are not merely supporting elements but flavour-delivery systems — the blanching preserves colour and eliminates bitterness while the dashi soaking infuses umami into every fibre. Premium ohitashi at kaiseki uses only ichiban-dashi with the finest usukuchi soy — the vegetable's colour and the broth's clarity are both preserved.

Vivid green, subtly sweet with gentle dashi umami soaked through; delicate soy-mirin seasoning; light, clean, refreshing vegetable dish