Butter & Shelter Gangnam Sinsa is a dessert cafe in Gangnam, Seoul that sells butter sandwiches, cookies, and coffee. It sits a short walk down an alley from Sinsa Station Exit 8. The original butter sandwich puts soft butter cream and chewy caramel between crisp cookies, and it goes with coffee. The shop is large with many seats, every coffee can be made decaf, and the butter sandwiches come in packages suited for takeout.