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Gyūdon is a popular Japanese rice bowl dish featuring thinly sliced beef and onions simmered in a savory-sweet broth, then served over a bed of steamed white rice. Originating in the late 19th century during Japan's Meiji era, it is a quintessential example of yoshoku (Western-influenced Japanese cuisine) and is widely available at fast-food chains and casual restaurants across Japan.
A typical serving is high in carbohydrates from the rice and provides a good amount of protein from the beef, with a moderate amount of fat. It is a calorie-dense meal, generally ranging from 600 to 800 calories per serving, and offers key nutrients like iron from the meat and B vitamins.
Culturally, gyūdon is a symbol of Japan's fast-food culture and affordability, with major chains like Yoshinoya and Sukiya competing fiercely. Its unique simmering technique, using a dashi-based broth with soy sauce and mirin, creates a deeply umami flavor that has made it a beloved comfort food nationwide.