Jayeondo Salt Bread in Seongsu

Jayeondo started on Yeongjongdo, the island next to Incheon Airport, and its Seongsu shop sells exactly one thing: salt bread, the small buttery roll with a crisp, salty base that Korea has fallen hard for. There is no menu to study. You buy a set of four at the kiosk, step into the pickup line, and walk out with a white paper bag that is still warm. The shop says it sells about 7,000 rolls a day, and you can smell the butter from the corner of Yeonmujang-gil before you see the line. Rolls are baked in six batches through the day, so timing your visit to a batch gets you the freshest bag. The store is takeaway only, which means the line looks long but moves quickly, and most people eat the first roll right there on the street. The bottom of each roll soaks up butter while the top stays chewy, with flakes of salt on the crust. For photos, the warm white paper bag held up on the street is the classic shot.