서교고메 – A 2019 Michelin Guide Plate awarded restaurant.
“At Seogyo Gourmet, Chef Choi Ji -hyeong serves up dishes that are close to his heart, including sundae. As a young boy, he grew up eating and making abai-sundae – blood sausage stuffed with glutinous rice, vegetables and pig’s blood. It’s a specialty of Hamgyeongdo Province in North Korea where his maternal family hails from. By staying true to his grandmother’s recipe, he pays homage to his family’s history. Together with his team, the Eleven Madison Park-trained chef offers familiar local dishes with a whimsical twist.” – Michelin Guide Inspectors 
We went, it was great and we recommend. The menu is on the small side for what is offered but it was super delicious. To accompany the dishes, they have traditional Korean rice drinks – makeoli – along with red and white wines.
Note that they are only open in the evenings from 6:00 to 10:00 and closed on Mondays.