Sujebi (수제비, in s. korea), ttŭdŏ-guk (뜨더국, in n. korea), or hand-pulled dough soup, or korean-style pasta soup, is a korean traditional soup consisting of dough flakes roughly torn by hand, with various vegetables. the flavor and recipe resemble kalguksu, except that the latter is made with noodles rather than wheat flakes. it is commonly considered a dish to consume on rainy days, along with bindaetteok. the broth for sujebi is usually made with dried anchovies, shellfish, and kelp. in order to obtain a rich, umami flavor, the ingredients should be simmered for many hours. added to this broth are soft noodles and various vegetables or kimchi, most often zucchini and potatoes.

Source: Wikipedia