Osulloc Tea House Yongsan Park is a cafe inside the Amorepacific headquarters in Seoul, selling tea and desserts such as Sejak, green tea bingsu, and matcha latte. It also sells tea-related items and goods, and customers can choose teas by tasting them. The space has high ceilings, plenty of indoor seating, and some outdoor seats. Maljjjonku is served at 11 a.m. on weekdays and noon on weekends, and sells out quickly if you arrive late.