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Noodles · Euljiro, Seoul

Gangsanok

강산옥

Locals' pickSince 1958On TVBlue RibbonGreat for solo diners ⓘ

Korea time, from recent reviews. Hours may differ on holidays.

A second-floor soybean house by Cheonggyecheon Stream, open since 1958 and only at lunch. From early summer to around September it serves just one dish, thick cold kongguksu; the rest of the year it switches to kongbiji (hot ground-soybean stew) with rice. Locals come here when the line at nearby Wooraeok is too long.

서울특별시 중구 청계천로 196-1

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How it works here

🥢 How Korean restaurants usually work

Waiting

Short wait
Just join the line

In kongguksu season a line forms before the 11:30 opening. Arrive right at opening to get in with the first group.· 3 reviews

What to order

📖 What is Kongguksu?
  • Kongguksu (cold soy-milk noodles)콩국수

    Summer only (roughly June to September). Very thick, nutty soy broth.

  • Kongbiji baekban (soybean stew set)콩비지 백반

    The off-season single dish: hot ground-soybean stew with rice and side dishes.

  • Umutgasari kongguk (agar jelly in soy milk)우뭇가사리 콩국

    A lighter summer option.

How much to order

  • 👤 1The dish of the season. There is basically one menu.
  • 👤 2One each of the seasonal dish.
  • 👤 3–4One each. Not suited to big groups.

Insider tips

  • Open only at lunch, and it closes early when the day's soy runs out.· 3 reviews
  • When the line at Wooraeok is long, regulars walk over here instead.· 2 reviews

Why it's famous

Opened in 1958 by a family from Pyongyang, and now run by the third generation.· 3 reviews

  • On TVFeatured on MBC's Hangout with Yoo and Heo Young-man's Baekban Gihaeng.· 3 reviews
  • Blue RibbonBlue Ribbon stickers cover the door.· 2 reviews

Good to know

  • Monday to Saturday 11:30 to 14:00. Closed Sundays.· 3 reviews
  • Up a narrow staircase on the second floor, about 3 minutes from Euljiro 4-ga Station exit 4, across Cheonggyecheon from Gwangjang Market.· 3 reviews

More locals' picks nearby

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Where this comes from (26 reviews)

Summarized in our own words from Korean diners' blog reviews; each fact is backed by at least two reviews. Last checked 2026-11-09.