Dongchimi — Winter Radish Water Kimchi (동치미)

The oldest documented form of Korean kimchi; records date to the Goryeo period. Traditionally associated with northern Korean cuisine (Hamgyong, Pyongan provinces) where cold winters facilitated outdoor fermentation

Dongchimi (동치미, 'winter water kimchi') is one of Korea's oldest kimchi forms — whole or halved Korean radishes fermented in a clean, mildly seasoned brine with minimal chilli (often none) over 1–3 months. The name combines 동 (winter) and 치미 (an archaic word for kimchi). The radishes are preserved in their briny liquid and the brine itself, cold and faintly effervescent from long fermentation, is the signature accompaniment to buckwheat naengmyeon. Dongchimi was historically made in late autumn and consumed through the winter months from onggi jars buried underground.

• Closest to Japanese daikon tsukemono in brine and German Sauerruben (pickled turnips) — all clean, cold-fermented root vegetable preparations where brine clarity is a quality marker

Cold dongchimi brine is the traditional liquid poured over buckwheat naengmyeon (냉면) at the table — it is simultaneously soup and seasoning. The radishes, eaten alongside, provide textural counterpoint to the chewy noodles. The brine also reduces beautifully as a base for cold sauces.