South korea Russet rice-based traditional korean drink. Some people drink Sungnyung for the breakfast, although this drink is generally served after a lunch. This drink is made with nurungji, the rice crust formed in the bottom of a pot after rice cooking. Water is poured on this brown crust and the result is boiled and simmered until the water becomes soaked with rice flavour. This drink is often made with traditional iron pots, as rice-cookers leave generally no crust after cooking.