Mandu-guk[2] (만두국, 饅頭-) or dumpling soup[2] is a variety of Korean soup (guk) made by boiling mandu (dumplings) in a beef broth or anchovy broth mixed with beaten egg.
[3] According to the 14th century records of Goryeosa (고려사), mandu had already been introduced via Central Asia during the Goryeo era.
Mandu was called sanghwa (쌍화) or gyoja (교자) until the mid-Joseon Dynasty and became a local specialty of the Pyongan and Hamgyong regions, as both wheat and buckwheat — the main ingredients for flour — were mainly cultivated in the north.
[5] Dumplings are made by rolling out thin circles of dough, creating a half-moon shape and filling them with a mixture of minced meat, vegetables, tofu and sometimes kimchi.
The addition of tteok, a cylindrical rice cake, is common as well, changing the dish's name into tteok-mandu-guk.