Makguksu

Mak-guksu or buckwheat noodles is a Korean buckwheat noodle dish served in a chilled broth and sometimes with sugar, mustard, sesame oil or vinegar. It is a local specialty of the Gangwon province of South Korea, and its capital city, Chuncheon. Jaengban-guksu is a type of makguksu in which buckwheat noodles and various vegetables are mixed in a tray. Makguksu is closely related to naengmyeon, the archetypal Korean cold noodle dish. However, its differences lie in the high concentration of buckwheat flour in its noodles — the result of the grain being a staple crop in the Gangwon-do area, and the use of greater amounts of vegetables. The dish gets its name "rough noodles" because the buckwheat used is generally unhulled. Makguksu is usually prepared directly from buckwheat seeds which have been soaked and ground into a paste. Since buckwheat is less glutinous than most grains, buckwheat flour is particularly difficult to knead, roll, and slice into noodles by hand; thus, the noodles are often created in a hand-cranked noodle-making machine instead.

Source: Wikipedia