Namasu — Japanese Vinegared Salads and Sunomono

Japan — vinegar-dressed preparations documented in Heian period court cuisine; New Year namasu a long-established ceremonial food

Namasu and sunomono represent Japan's tradition of vinegared vegetable and seafood salads — preparations that use rice vinegar's particular character (mild, slightly sweet, low acidity compared to Western vinegars) to create refreshing, palate-cleansing dishes served as part of multi-course meals or as standalone preparations. Namasu typically refers to raw vegetable preparations (the name derives from 'nama' — raw), while sunomono (vinegar-thing) encompasses a broader range including seafood. The technique involves a specific process: vegetable or seafood is prepared, often with a preliminary salting step to draw out moisture and soften texture, then dressed with sanbaizu (a three-vinegar dressing of rice vinegar, soy, and mirin in ratio approximately 3:1:2) or nihaizu (two-vinegar, without mirin), sometimes with additional aromatic elements. The classic New Year namasu — kohaku namasu (red and white) — uses julienned daikon and carrot, salted to wilt, squeezed dry, then dressed with sweetened rice vinegar and topped with a piece of dried persimmon. This preparation is deliberately symbolic: the white of daikon and red of carrot represent crane and sun/blood respectively, making it a propitious food. Seafood sunomono particularly suits vinegar dressing — octopus, cucumber, wakame, and tosazu (dashi-enriched vinegar) create classic combinations. The vinegar brightens and contrasts the mild marine flavours while the dashi depth in tosazu prevents the dressing from reading as simply sharp.

Sunomono and namasu have a bright, clean acidity from rice vinegar that refreshes without harshness, a subtle sweetness from mirin that rounds the edges, and (in tosazu preparations) a savoury dashi depth that transforms what might be a simple salad into a complex, satisfying dish.