Jung is a name given to a traditional oriental dish consisting of glutenous rice and a selection of fillings made of either mung beans, seeds, nuts, egg yolks and meats. Always wrapped in a broad bamboo leaf/dong leaf/banana leaf of whatever leaf you have at hand. This dish is usually past down through generations. Depending on your region, ethnicity or taste this dish can vary from recipe to wrapping method. In Hong Kong this dish is made during the end of May for the Dragon Boat Celebrations. I remember my mum making this for Chinese/Lunar New Year. It really depends on the region your family is from.