Daeseongseong is a restaurant on Seosunra-gil in Seoul that serves Vietnamese pho, banh xeo, and bun cha. The banh xeo has a crisp texture and a generous filling, and the bun cha and pho are served alongside it. The pho is clean and light, and the bun cha comes with a sweet-and-sour taste. The shop is run entirely by Vietnamese staff.