Beef noodle soup is a Chinese and Taiwanese noodle soup made of stewed or red braised beef, beef broth, vegetables and Chinese noodles. It exists in various forms throughout East Asia and Southeast Asia. Beef noodle soup was first created by the Hui people (a Chinese Muslim ethnic group) during the Tang Dynasty of China. The red braised beef noodle soup was invented by the veterans in Kaohsiung, Taiwan who fled from mainland China during the Chinese civil war.
In the North American Chinese communities, this food can be found in Taiwanese and Chinese restaurants. In China, a large bowl of it is often taken as a whole meal with or without any side dish. In Taiwan, vendors that sell beef noodle may also have optional, often cold side dishes, such as braised dried tofu, seaweed, or pork intestine. Beef noodles is often served with suan cai (Chinese sauerkraut) on top, green onion, and sometimes other vegetables in the soup as well.