オム牛丼？！
Gyūdon (牛丼, "beef bowl"), also known as gyūmeshi (牛飯 or 牛めし, "beef [and] rice"), is a Japanese dish consisting of a bowl of rice topped with beef and onion simmered in a mildly sweet sauce flavored with dashi (fish and seaweed stock), soy sauce and mirin (sweet rice wine).
