Cafe de Lion COEX is a dessert cafe in Samseong 1-dong, Gangnam-gu, Seoul, selling cake and mille-feuille along with salt bread and scones. It offers six kinds of mille-feuille, including vanilla, earl grey and marron, with brown milky as a signature menu item. The signature coffee is available only iced, and the cream in the mille-feuille can melt and run. Seats are packed closely together, making the space feel cramped.