Take subway Line 2 to Gangnam Station. Shin-Gangnam (31 Bongeunsa-ro 2-gil) is open 10am–11pm, Yeoksam (111 Teheran-ro, 1F) 10:30am–11pm, and Central Gangnam Town (403 Gangnam-daero, B1–4F) until 10:30pm. 올더뮤 mucin plum flavor comes as 7 sticks plus 2 free, with 2,022 reviews.