Cool Kids Cookie Yongsan is a cafe in Seoul that sells American-style cookies on Yongridan-gil in Yongsan. The lineup includes Signature Milk Cow, New York Melting Choco Chip, Pink Strawberry, and American Choco Chip. The cookies are baked so the outside is crisp while the inside stays moist and dense. After buying cookies, customers who want to stay in the shop must order a drink as well.