Boseung Hoegwan Gangnam Station
보승회관 강남역직영점
Nearest station: Gangnam Station (강남역) Exit 12 · ≈170 m≈ approximate, from map data (Kakao Map, Naver Map or map coordinates)
A company-run branch of a sundae-gukbap (pork and blood-sausage rice soup) chain on Teheran-ro 1-gil, close to Exit 12 of Gangnam Station, open 24 hours. Sundae gukbap and pork gukbap are ₩11,000, and a one-person set with a soup plus boiled pork and sundae is ₩16,000. There is a bar counter for solo diners along the window, and you order with the QR code or tablet at your seat. Kakao Map and three September 2026 blogs all list it as open 24 hours.
Last checked: 2026-10-06·Desk-researched — not yet verified on site
Payment
None of the sources checked say whether foreign cards work. Orders go through the QR code or tablet at your table.
Hours
24 hours · Closed: Listed as open every day of the year (September 2026 blog)
Reservation
None of the sources checked mention reservations.
Address
서울 강남구 테헤란로1길 17 101호
Unit 101, 17 Teheran-ro 1-gil, Gangnam-gu, Seoul
Gangnam · Places
Duseong Jeonju Kongnamul Gukbap, Gangnam Station
두성전주콩나물국밥 강남역점A Jeonju-style kongnamul gukbap (bean-sprout soup with rice) restaurant in an alley on Yeoksam-ro 3-gil, behind Exit 4 of Gangnam Station. Kakao Map and DiningCode list it as open 24 hours every day, but a notice on Naver and an October 2026 blog say it closes from 21:00 Sunday to 09:00 Monday. The house kongnamul gukbap is ₩8,000 and the kimchi version ₩9,000 (Naver and DiningCode), which makes it one of the cheaper soup breakfasts around Gangnam Station.
Egg Drop Sinnonhyeon Station
에그드랍 신논현역점An egg-sandwich shop in the basement of a building toward Exit 7 of Sinnonhyeon Station. It opens at 07:00 every day; closing is 20:30 per Naver, DiningCode and a blog but 21:00 per Kakao Map. You order at a kiosk, and the American Ham Cheese sandwich was ₩5,600 (August 2026 blog).
Gangnam Jinhaejang
강남진해장A haejangguk (Korean hangover soup) and beef-tripe hotpot restaurant on Teheran-ro 5-gil, toward Exit 12 of Gangnam Station. A September 2026 blog describes it as open 24 hours with no day off, while Kakao Map shows it closed from 21:30 on Sunday to 06:30 on Monday; it is open early every other morning. The signature yang-seonji haejangguk, with beef tripe and blood curd, is ₩13,000 and naejangtang (offal soup) ₩16,000. In the evening the large hall fills with people sharing hotpot over drinks.
Hayes Mill Bakery
헤이즈밀베이커리 본점A sourdough bakery cafe on Apgujeong-ro 14-gil, in the back streets of Garosu-gil, open 09:00–19:30 every day. That is not early, but it is two hours or more ahead of Garosu-gil brunch places such as Noras (11:00) and Pinch Brunch Bar (11:30). It is known for open toasts: almond butter open toast ₩8,000 and avocado open sandwich ₩9,800, per Kakao Map. Kakao Map and two September 2026 blogs all give the same hours.