The signature dish at Xia Hu Chalam is shark fin soup (hu Chalam), but I came for the the fish maw (krapho). The options are either as a soup (pla) or stir-fried (pad). I went for the soup version as that is what I prefer. I also ordered a plate of stir-fried Hong Kong egg noodles with crab meat. Both serving came out tasty and properly made with the right texture. The fish maw is absolutely excellent. See full review at StreetsideBangkok.