Kkapkau Kapppla is a Thai restaurant on the 6th floor of EmQuartier Helix in Bangkok. It serves khao kha mu, phat thai, tom yum kung, phat si io, and som tam, along with thang mo pan. Sitting by the window gives a view of the park across the street, and you can ask for the spices to be left out when ordering. The inner seats are cramped and very hot.