Chagok Patisserie is a chocolate specialist in Seoul that sells cakes and chocolate desserts near Hapjeong and Hongdae. Its signature Kkaman Cake is a gluten-free chocolate cake made with Valrhona chocolate, dense and not too sweet, and it pairs well with an iced Americano. A pastry chef from a five-star hotel makes the cakes, and the shop is spacious and quiet, so the seats in the back can be used for laptop work. Because there are many kinds of cake, tasting them all in one visit is difficult.