Hoian Roastery is a Vietnamese coffee cafe in a commercial building in Munjeong-dong, Seoul. It serves egg coffee, cà phê sữa đá, and bạc xỉu, reproducing Vietnamese-style coffee. The shop is divided into a basement, first floor, and second floor, and for iced drinks you can watch the coffee drip in front of you. The seating is small, so the shop feels cramped.