Naengguk is a common name for a group of South Korean cold soups that are usually consumed during summer. It is believed that there is no better refreshment than a bowl of cold naengguk on a hot summer day. The soups are typically divided into two main categories: for the first one, cold water is combined with vinegar and ingredients such as cucumbers, spring onions, garlic, wakame, or nori seaweed.

The second category of naengguk is reserved for soups that benefit health, such as the ones made with sesame, soybeans, or chicken. Naengguk first appeared in the 12th century in a poem written by Yi Gyu-bo, where it was referred to as soup with sunchae and was praised for its refreshing, clear flavor.