Foodcoma911 is a blog I frequent often and today I found this gem of creativity. They sell these ㅠ's stuffed with walnut or sweet potato. I should check it out one day.
Click here for the rest.
Address: 서울시 종로구 종로3가 13-1
Directions: Line 1, 3, and 5 Jongno 3-ga Station (종로3가) exit 1 walk straight ~50m and on the right.