Fish maw is the swim bladder of the fish, dissected and dried and become, is one of the four major sea food, in recent times was included in the "eight treasures" one of the fish maw is also a classic food into the dish. Produced in coastal China, Guangdong's "wide belly" is the best. Fujian's "hairy fish maw" is inferior to the "wide maw", but is also a good product.

Fish maw is also called fish glue, white swim bladder, flower glue, swim bladder. Fish maw has yellow fish maw, back to the fish maw, eel maw, etc., mainly produced in China's coastal and Nanyang Islands and other places.

Fish glue is the best kind of animal glue in a bonding material, but also the highest price of a kind of animal glue, it is made of fish skin and other scraps. Production and use of the same methods and other animal glue, but because in recent years in the fish body to get more substances, high efficiency, wide range of uses, so almost not used in the production of adhesive materials for processing.

The quality of fish maw identification is relatively simple, in addition to mastering a variety of fish maw characteristics, generally Zhang big body thick, bright color for the top; Zhang small thin, gray color for the second product; color black has deteriorated, inedible. China's fish maw's main place of origin for the southern coast and the South China Sea Islands and other places, in Guangdong, Guangxi, Hainan, Fujian coast produced by the hair taste maw, salamander fish maw (catering industry is commonly known as broad maw) the best quality.

The top fish maw ranking in order is white flower gum, yellow flower gum, _ fish gum, door eel gum. Those who have eaten flower glue must know that it has a kind of greasy stagnant feeling. It turns out that the aged flower glue does not have this problem at all. The more aged the better, more than fifty years of flower glue to mortgage, can ask for more than ten thousand dollars a piece.