Char Su Sigan is a small tea shop on the ground floor of 130 Sajik-ro in Jongno-gu, Seoul, just below the Exit 6 staircase at Gyeongbokgung Station. It sells pu-erh tea, matcha, and iced tea, and the matcha is whisked by hand one cup at a time for takeaway. Two older staff members run the shop, and a wait forms on weekday afternoons. The matcha takes time to make, so waiting is required.