Tom Yum Gung
This Thai masterpiece soup is teeming with shrimp, mushrooms, tomatoes, lemongrass, galangal and kaffir lime leaves. It can be ordered loaded with coconut milk (tom yum gung nam kohn) and cream or without (tom yum gung nam sai) for a slightly more sour and healthy version.
This soup truly unifies a host of favorite Thai tastes: sour, salty, spicy and sweet, all in one bowl. This is an authentic Thai delicacy that many locals are passionate about and has spread around the world.
http://travel.cnn.com/bangkok/eat/40-bangkok-foods-we-cant-live-without-342900