Ganggyeong, the Geum River town that kept fermenting after the boats stopped

The smell reaches you a block before the first shop does: brine, cold and clean, closer to a harbour at low tide than to anything spoiled. Then the signs begin, one after another down the road in Ganggyeong (강경), each carrying the same two syllables, jeotgal (젓갈), salted and fermented seafood. A woman behind a chilled glass counter holds out a toothpick with a single pink shrimp on the end, and waits.

A port without boats

Ganggyeong is a small town in Nonsan (논산), South Chungcheong Province, set on a bend of the Geum River (금강). It sits far enough inland to touch the rice country and close enough to the sea that the tide once helped a loaded boat upstream. Fishing boats came up from the West Sea, merchants came down from the interior, and the market that formed between them is usually counted among the great markets of late Joseon, alongside Daegu and Pyongyang.

The boats no longer come. Rail took the freight first, and a barrage near the river mouth later closed the water route. What the town kept was a habit it had formed for a practical reason: fish that could not be sold fresh by evening went into salt. The seafood now arrives by road from the west coast, and Ganggyeong does with it what it did before, in cold rooms rather than on the quay.

Reading the shrimp by the month

The trade is concentrated around Ganggyeong Jeotgal Market (강경젓갈시장), a flat walk from the station towards the river. Most shops are deeper than they look from the street, with a tasting counter in front and storage behind. As you pass, shopkeepers call out the same line.

맛보고 가세요.

Matbogo gaseyo: have a taste before you go. It is meant literally, and tasting before buying is the normal order of things here.

Start with saeu-jeot (새우젓), salted shrimp, because it teaches you to read the labels. The names refer to the lunar month of the catch. Ojeot (오젓) is fifth-month shrimp. Yukjeot (육젓), from the sixth month, is plumper and paler and priced accordingly. Chujeot (추젓), the autumn catch, is smaller, and it is what many households buy in quantity for gimjang (김장), the late-autumn kimchi-making. Tasted side by side the difference is not subtle: yukjeot is sweet behind the salt, and the shrimp hold their shape between your teeth.

The rest of the counter is vocabulary. Myeongnan-jeot (명란젓) is pollock roe still in its membrane; changnan-jeot (창난젓) is chewy and red with chilli; ojingeo-jeot (오징어젓) is squid cut into strips. Jeotgal is sold by weight and packed into lidded plastic tubs. Prices are posted or quoted by tub size and move with grade and season, so ask before the scoop goes in.

A meal built from condiments

Several restaurants near the market serve jeotgal baekban (젓갈백반), sometimes listed as jeotgal jeongsik (젓갈정식). A tray arrives with a dozen or more small dishes, each holding a spoonful of a different jeotgal, alongside rice, a stew, and a few plain vegetable sides to rest on. It is the most efficient way to learn what you like before paying for a tub of it.

The first-timer's error is portion. Jeotgal is seasoning that happens to be served as a dish. People at the next table take an amount the size of a fingernail, set it on a mouthful of rice, and often wrap the whole thing in a square of dried laver or a steamed cabbage leaf. Eaten by the spoonful it is punishing. Some kitchens take set-meal orders only for two or more, so a solo traveller should ask at the door before sitting down.

Brick, timber and a herbalist's upper floor

The money that passed through the port left buildings, and a handful survive within a few streets of each other. The former Hanil Bank Ganggyeong branch (구 한일은행 강경지점) is the easiest to find, a red-brick banking hall with tall windows. It has been serving as Ganggyeong History Museum (강경역사관), a modest display of photographs and household objects from the trading years. Small municipal museums keep their own closing days, so confirm with Nonsan City's tourism pages before building a morning around it.

A few streets on is the former Ganggyeong Labour Union building (구 강경노동조합), a low timber hall for the men who carried cargo off the boats. Near the old lower market stands the former Yeonsudang herbal pharmacy (구 연수당 건재 약방), a two-storey wooden shop under a tiled roof with its upper floor faced in boards. None of these is grand. They are worth the walk because they are ordinary commercial buildings, the kind that usually go first.

The hill at the north end

Oknyeobong (옥녀봉) is barely a hill, a wooded knuckle of rock at the northern edge of town that takes a few minutes to climb by stone steps. At the top are an old zelkova, a restored beacon mound, and the view that explains everything below it: the Geum sliding past in a wide brown curve, rice plain on both banks, the town's low roofs pressed against the embankment.

From the foot of the hill an embankment path follows the water towards Hwangsan Bridge (황산대교). Set back from the bank near the bridge are two small Joseon-era pavilions, Imnijeong (임리정) and Palgwaejeong (팔괘정), where scholars once sat facing the same river. Late afternoon suits it, when the light comes low across the far bank and the path is left to cyclists and the occasional angler.

Getting there and carrying it home

Ganggyeong Station (강경역) is on the Honam Line (호남선). Conventional trains on this line leave Seoul from Yongsan Station (용산역) and Daejeon from Seodaejeon Station (서대전역). Faster services tend to stop at Nonsan Station (논산역), the next town up the line, from where a local train, bus or taxi covers the rest. Timetables and fares are on Korail's site and app, and weekend seats are worth reserving ahead. The town is flat and small enough to cover on foot in a day.

Autumn is the busy season. Households come to buy for gimjang, and the town holds its jeotgal festival around then, with dates announced each year by Nonsan City. A weekday in winter or spring is calmer, and the tasting is unhurried.

The last problem is transport. Ask for pojang (포장) and a shop will usually pack a tub in a foam box with ice packs, and many can send it by courier to a Korean address. But jeotgal is raw, wet and fragrant, and it does not forgive a warm afternoon in a backpack. The mistake to avoid is buying a large tub on enthusiasm and only afterwards checking whether your airline will carry it and whether customs at home admits fermented seafood. Buy small, eat it during the trip, and settle the rest before you reach the counter.