Duck food belt is the esophagus of ducks, also known as duck esophagus, duck plate intestine refers to the large intestine of ducks. In the choice of duck food belt can not choose has been black duck food belt, need to choose white and clean and without impurities of duck food belt, duck plate intestines will be more fat, it is a fat words especially rich, if you go to roast is not to add any oil.