Bún mọc is a traditional noodle soup originating from Moc village, Nhan Chinh, Thanh Xuan, Hanoi. The main ingredients in the soup are vermicelli noodles and pork balls. The broth is usually made from shiitake mushrooms and pork ribs and bones, and the foam is skimmed off the surface regularly as the broth is simmering so that it remains clear and has a sweet, delicate, and rich flavor.

The pork balls are made from raw pork sausages such as cha lua, cha chien, cha la, and cha que. Bean sprouts, shallots, black pepper, and cilantro are welcome additions to bún mọc, elevating the noodle soup's flavors to make it even more rich.