Kong-guksu[2] (Korean: 콩국수; lit.

soybean noodles) or noodles in cold soybean soup[2] is a seasonal Korean noodle dish served in a cold soy milk broth.

[3] It is unknown when Korean people started eating kongguksu; however, in accordance with the mention of the dish along with kkaeguksu (깨국수, sesame noodle soup) in Siui jeonseo, a Joseon cookbook published around the late 19th century, it is presumed to have originated at least as early as the 19th century.

[4] It is served with salt or sugar depending on the region.

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