Lo mein (Chinese: 撈麵) is a Chinese dish with wheat flour noodles.It often contains vegetables and some type of meat or seafood, usually beef, chicken, pork, shrimp or wontons. It can also be eaten with just vegetables.Traditionally this is a variation of wonton noodle soup.n this setting, lo mein noodles are usually stirred with a sauce made from soy sauce and other seasonings. Vegetables such as bok choy and cabbage can be mixed in and meats like roast pork, beef or chicken are often added.