Fish maw is sun-dried swim bladder of fish which is an internal gas-filled organ found in most fish such as cod. Fish maw is one of the precious traditional Chinese delicacy ingredients rated along abalone and sea cucumber. Cod Fish maw is an excellent source of collagen, proteins, and nutrients. It helps nourish “yin”, improves blood circulation, speeds up wound recovery, replenishes kidney, boost stamina and fortifies lung functions.