Tosok Kalguksu is a kalguksu restaurant on the mountainside of Pyeongchang-dong in Jongno-gu, Seoul. It serves Andong guksi in a sagol bone broth, kalguksu in a meat broth, and handmade son mandu, with kimchi and kkakdugi on the side. The restaurant started in Sinyeong-dong in 2010, moved through Yeokchon-dong, and then to Pyeongchang-dong, and the cafe on the second floor is open until 3:30 p.m. Parking space is not ample.