Each dish not only proves the ingenuity and courage of the housewives, the characteristics of each locality, moreover, culinary art is also a highlight showing the cultural identity and civilization level of the local people. each nation. The legend also records the origin of banh chung, banh day symbolizing the concept of "round heaven, square earth" created by agricultural products from the time of Prince Lang Lieu to King Hung.
The land of the East has always made visitors from all over the world "go to remember, return to love" by the specialties associated with each land name, village name, street name. Coming to Hai Duong, guests remember Ke Sat rice paper, Thanh Ha lychee and especially no one forgets to bring back dozens of boxes of mung bean cakes.

Mỗi món ăn không những chứng tỏ tài khéo léo, đảm đang của người nội trợ, nét đặc sắc của mỗi địa phương, hơn thế nữa, nghệ thuật ẩm thực còn là điểm nhấn thể hiện bản sắc văn hoá, trình độ văn minh của mỗi dân tộc.  Truyền thuyết còn ghi nguồn gốc món bánh chưng, bánh dầy tượng trưng cho quan niệm về "trời tròn, đất vuông" được tạo nên bởi những nông sản từ thủa Hoàng tử Lang Liêu dâng lên vua Hùng.
Vùng đất xứ Ðông xưa nay đã khiến khách bốn phương "đi nhớ, về thương" bởi những đặc sản gắn với từng tên đất, tên làng, tên phố. Ðến với Hải Dương, khách nhớ đến bánh đa Kẻ Sặt, vải Thanh Hà và nhất là không ai quên mang về chục hộp bánh đậu xanh

Making a mung bean cake is not too fussy, but the inside contains the unique heirloom secrets of the special quality of the specialty of the Northern countryside.  The ingredients for making mung bean cake such as sugar, fat or cooking oil must be carefully selected.  Mr. Luong Xuan Hat, Workshop Manager, Gia Bao Green Bean Cake Company, said: Although there are few ingredients, it is very difficult to make cakes, usually when producing, need green beans, crystallized sugar, lard, etc.  essential oil of grapefruit flower, coconut oil.  These ingredients will be mixed together in a certain ratio.  If you use lard to make cakes, you must choose fresh fat, fry it on low heat until the fat is clear and fragrant.  Good frying fat is a medium-sized fat, if the fat is too old, the cake will have a burnt smell and if the fat is too young, the cake will lose its aroma and taste: “From the beginning, the ingredients are managed very closely.  Raw materials such as green beans and sugar must be of clear origin, quality assurance and company requirements.  When put into storage is preserved.  Green beans must be uniform, ripe, not moldy, choose the best type of green beans, making the cake will be very delicious.  Green beans are roasted in a modern production line, ensuring clean, no sand.  After roasting, it will be peeled, ground into a powder and mixed with other ingredients to make cakes.