Seolleongtang is a hot, invigorating South Korean bone soup prepared by boiling cow's bones, feet, head, organs, brisket, and shank for a long time until the broth develops a creamy white color. The soup is a staple in numerous Korean households, especially during the cold winter months.
It is believed that the soup was invented because King Seonjong of the Joseon Dynasty needed to feed a large number of people at a worship ritual for the god of farming, during which a cow would be sacrificed. The name of the dish is derived from the word Seonnongtang, meaning soup boiled at Seonnongdan, and later on, the word evolved into Seolleongtang.