''Banh Chung” is one the most traditional special foods for the lunar new year in Viet Nam. It is made of sticky rice, pork and green bean, all ingredients are wrapped inside a special leaf which calls Lá Dong. The rice and green bean have to be soaked in water for a day. The pork is usually seasoned with pepper & salt for several hours. ''Banh Chung'' is boiled for 6 or 8 hours. Nowadays, families in villages still maintain making stuffed sticky rice cake before the lunar New Year but people in the cities do not. .Chung cake is the most solemn and noble food to worship the ancestors, expressing the heart of drinking water, remembering the source, remembering the merits of birth, giving birth to a great and immense nurture like the parents' heaven and earth.