Dodohanmyeon Seongsu (도도한면 성수본점)

Dodohanmyeon (도도한면) is a specialty Japanese udon shop tucked into a narrow alley off Yeonmujang-gil in Seongsu — a location quirky enough that the restaurant's social media regularly warns first-time visitors not to walk past it. The kitchen is laser-focused on udon, and the menu reflects that discipline: creamy jarou udon as the signature, galchi (hairtail) udon for a sharper, more savory profile, and chikutama bukkake as the standard-bearer for cold udon preparations. The jarou udon is the dish to order on a first visit — the noodles are exceptionally chewy, the sauce is rich and creamy without being heavy, and the balance lands somewhere between a Korean cream pasta and a traditional Japanese udon broth, in the most flattering possible way. Side dishes round out the menu with tempura and yufu sushi (inari) that complement the udon without competing for attention. The space is small and cozy, with high chairs available for families and baby utensils on request, which makes it more approachable than the typical Seoul ramen counter for visitors traveling with kids. Wait times can be long during peak hours, especially weekends — last order is at 20:20, and the kitchen runs continuously from 11:30 — but regulars consistently report the wait is worth it. With 157 Google reviews at a 4.7-star average, Dodohanmyeon has established itself as one of Seongsu's premier destinations for serious udon.