Thinly sliced beef and onion braised quickly in a sweet soy-mirin-sake mixture and served over a bowl of hot jasmine or Japanese short-grain rice. Gyudon is Japan's most consumed fast food — the preparation sold at Yoshinoya, Matsuya, and Sukiya chains for under ¥500 is at its best a quick, deeply satisfying combination of savoury-sweet beef, soft onion, and the plain rice that absorbs the flavoured cooking liquid. Its home version is made within 15 minutes and requires no special technique beyond the correct beef cut and the sweet-soy seasoning balance.
**The beef:** Very thin slices of beef — thinly sliced against the grain (2–3mm), specifically from a cut with some fat content: ribeye, sirloin, or chuck. Pre-sliced shabu-shabu beef (available at Japanese grocery stores) is the standard. The thin slicing allows the beef to cook through in under 2 minutes. **The onion:** Sliced into thin half-moons — 5mm wide. The onion must be cooked until it has completely softened and begun to translucent (5–7 minutes of simmering) before the beef is added. The onion provides both texture and sweetness that is essential to the balance of the dish. **The seasoning:** - Dashi: 200ml (ichiban or niban). - Soy sauce: 3 tablespoons. - Mirin: 3 tablespoons. - Sake: 2 tablespoons. - Sugar: 1 teaspoon. The balance is sweet-forward — sweeter than most Japanese preparations, which reflects the deliberate comfort-food character of gyudon. **The preparation:** 1. Combine the seasoning in a wide pan. Bring to a simmer. 2. Add the sliced onion. Simmer for 5–7 minutes until completely soft. 3. Add the beef slices — separate each slice as it enters the simmering liquid. 4. Simmer for 90 seconds — the beef should be just cooked through. No longer. 5. Serve immediately over the rice. 6. Beni shoga (pickled red ginger) on top: the standard condiment that cuts through the sweetness of the gyudon sauce. Decisive moment: The beef timing — 90 seconds in simmering liquid. The thin slices cook in this time to just-done: tender, still slightly pink, moist. 3 minutes: the beef tightens and begins to chew. The key: add the beef only when the onion is fully soft and the cooking liquid is at a simmer, then time from that moment.
Tadashi Ono & Harris Salat, *Japanese Soul Food* (2013)