Naengmyeon (Korean Cold Noodles)

Naengmyeon becoming a summer dish is a fairly recent development. People in Pyongan and Hamgyong provinces originally ate it in midwinter, because that was the season when the dongchimi brine buried in earthenware jars turned cold enough to form a skim of ice. Sitting on a heated ondol floor eating noodles cold enough to ache your teeth was a winter luxury. The dish moved south in bulk around the Korean War, when displaced northerners settled in Seoul and Busan, and once refrigeration spread and icy broth became available year-round, it naturally migrated to summer. Busan's milmyeon began the same way — as a refugee adaptation that swapped in wheat flour.

Start with Pyongyang naengmyeon. Pyongan province gets little rainfall, which made rice farming hard and buckwheat easy, and buckwheat has almost no gluten, so it falls apart in hot soup. Eating it cold was the practical solution. In practice most shops blend roughly seven or eight parts buckwheat to two or three parts starch, because pure buckwheat noodles break far too easily. The noodles are greyish-brown, on the thick side, and snap cleanly when you bite. The broth is a clear, skimmed stock simmered long from beef, pheasant or chicken, sometimes cut with dongchimi brine. On top go slices of boiled brisket, julienned cucumber, pear and half a boiled egg. First-timers often find it not just plain but flavourless — that's structural. Three or four mouthfuls in, the buckwheat aroma and the meat's background sweetness start to surface.

Hamhung naengmyeon is a different animal entirely. Hamgyong province grew potatoes, and when potato starch processing took hold under Japanese rule, starch noodles followed. Today most shops use sweet potato starch instead. The noodles come out translucent, thin, and so tough and chewy that biting through them is genuinely difficult. Rather than being served in broth, they're standardly tossed in a gochujang sauce as bibim-naengmyeon, and adding a topping of marinated raw fish — pollack, skate or ray — makes it hoe-naengmyeon. So the common shorthand of 'broth equals Pyongyang, sauce equals Hamhung' is only half right. The real difference is what the noodle is made of, not whether there's soup: Pyongyang shops sell a sauced version, and Hamhung shops sell a soup version. Beyond these two there are regional lines like Jinju naengmyeon, topped with beef tartare and built on a seafood-based broth, and the Hwanghae-province style.

A few practical notes. Dedicated Pyongyang naengmyeon restaurants are largely lunch businesses, and queues at noon in peak summer can be long. Ordering mandu to share alongside is a long-standing pairing, and going in winter means a far calmer meal. Hamhung shops will usually ask about your spice tolerance, so start mild if it's your first time. The complimentary bowl of cold noodles offered at the end of a Korean barbecue meal is yet another lineage — a popular sweet-and-tangy broth with thin noodles — so don't order it expecting Pyongyang-style restraint. At specialist restaurants a bowl often runs over ₩10,000, and prices vary widely by region and shop, so check before you go.