Achasan Ongsimi Memil Kalguksu is a restaurant near Achasan in Seoul that serves potato ongsimi, memil kalguksu, and bibim makguksu. The broth is a potato broth with a nutty flavor like kongguksu, and the noodles are made from buckwheat, with a texture that snaps apart when chewed. Barley rice arrives first, and diners choose between ongsimi kalguksu and bibim noodles. Food takes time to arrive.