yú dù. Fish maw is also known as fish glue, white swim bladder, flower glue and fish bladder. Fish maw has yellow fish maw, back to the fish maw, eel maw, etc., mainly produced in China's coastal and South Pacific Islands and other places. It is the swim bladder of fish, which is dissected and dried in the sun. Is one of the four major sea food, in recent times was included in the "eight treasures" one. Fish maw is also a classic ingredient in the dish.

Fish maw preservation method:

Dry fish maw is most afraid of moisture, insects, can be stored in ceramic, wooden containers. Bottom put moisture absorber or lime, sealed placed. Can also put a few cloves of garlic at the same time. Can also be sealed in a plastic bag and placed in the freezer. Fat good fish maw should not be stored for a long time.

Fish maw is derived from the swim bladder of the yellow croaker, also known as the yellow flower gum or tube maw, due to different processing methods and different names, such as smaller and thinner body called hanging piece; smaller and thinner called yellow piece; a number of pieces of fresh swim bladder pasted into the body of the thick, but opaque, called hitchhiking piece or piece of gum; processed into a band collectively referred to as the long gum or with gum.