Hangiri Rice Cooling and Seasoning Tub

Sushi culture, Edo period Tokyo; the hangiri's flat shape distinguished from the deep ohitsu (storage vessel) — both cypress, but form follows the specific purpose

The hangiri (also ohitsu or sushi oke) is a flat-bottomed cypress wood tub used for cooling and seasoning sushi rice (shari). The wide, shallow shape maximises surface area for rapid evaporation of excess moisture while the hot rice is seasoned; the cypress wood absorbs excess steam while the natural oils in the wood (hinoki) prevent bacterial growth and add a faint woody sweetness. Technique: freshly cooked rice is transferred immediately to the hangiri while hot; sushi vinegar (su) is drizzled over and folded in with a shamoji (flat wooden paddle) using a horizontal cutting motion — never stirring, which breaks grains. A fan (uchiwa) directed over the rice while folding accelerates evaporation. The goal: glossy, seasoned, body-temperature rice with individual intact grains — never clumping, never hot. The hangiri must be soaked in water before use to prevent absorption of rice and vinegar; after use, rinse immediately, dry thoroughly, and store uncovered.

Sushi vinegar penetration requires heat — hot rice absorbs su deeply into each grain; cooling before vinegar addition produces surface-only seasoning with uneven flavour