Amsa Gobau Gamjatang is a gamjatang restaurant in Gangdong-gu, Seoul, serving kongbiji gamjatang and bone haejangguk. The broth is spicy but not salty, with ugeoji and large pork bones, and ramyeon noodles are free and unlimited. It stays open until 2 a.m., refills broth and kongbiji, and offers takeout. The meat is sometimes undercooked.