Roast duck with iron plate is a famous snack originated in Dushangang Town, pinghu city, Zhejiang Province. It is rumored that Ganlong once ate roast duck with iron plate here, which was full of praise and was absolutely delicious. Since then, roast duck with iron plate has originated.

Dushangang Town is a famous port town in pinghu city, Zhejiang Province, with a large population, and there are many famous snacks, among which the famous ones are roast duck with iron plate, vermicelli soup with sea white shrimp, and crab with yellow noodles.