Hongjedong Sundubu Udon Guksu Seoulyeok Wise Towerjeom is a Korean restaurant in Seoul’s Wise Tower that serves sundubu (soft tofu stew) udon and sundubu (soft tofu stew) jjigae. The dishes are served by adding a block of sundubu (soft tofu stew) to udon like the udon sold at old markets or rest stops. The sundubu (soft tofu stew) udon is not very spicy and comes with a generous amount of udon. The sundubu (soft tofu stew) jjigae is mild.