The ultimate Japanese comfort bowl — crispy tonkatsu pork cutlet simmered in sweet dashi with onion and soft egg, served over steamed rice in one deeply satisfying dish.
Katsudon (カツ丼) is the intersection of two of Japan's most beloved dishes: tonkatsu (the breaded pork cutlet) and donburi (the rice bowl). A pre-fried tonkatsu is sliced and briefly simmered with onion in a sweetened dashi broth, then bound with barely-set beaten egg and slid over hot steamed rice in a wide ceramic bowl. The result unites three distinct textures — the still-crackling panko crust softened slightly by the broth, the juicy pork inside, and the silky, custardy egg — into one extraordinarily satisfying combination. Katsudon holds a particular cultural resonance in Japan: it is the meal eaten the night before major examinations. The word 'katsu' is a homophone for the Japanese verb meaning 'to win' or 'to overcome,' making katsudon a ritual pre-exam meal consumed for luck by Japanese students, athletes, and competitors for well over a century. The technique requires a small individual pan — a donburi pan or any 22 cm skillet — and precise timing for the egg. The cutlet should be added to the already-reduced broth so it absorbs some liquid without losing all its crunch, and the egg must be removed from heat while visibly underdone, finishing to perfection from residual heat as it travels to the bowl and the diner picks up chopsticks.
Serves 2
Combine dashi, soy sauce, mirin, sake, and sugar in a small bowl. Stir to dissolve sugar. Taste — it should be strongly savory with a clear sweetness.
Pour tsuyu into a small skillet (22 cm) and add sliced onion. Bring to a simmer over medium heat and cook 4 minutes until onion is just translucent.
Slice each tonkatsu crosswise into 3–4 cm strips (keeping them together in their cutlet shape) and lay over the onion in the broth. Spoon broth over the cutlet. Simmer 1–2 minutes — the cutlet absorbs some broth and softens slightly while the crust stays partially intact.
Do not over-simmer the cutlet — it should stay partially crispy inside the broth, not become fully soggy.
Beat 2 eggs lightly — 8 strokes, leaving white and yolk streaked rather than fully mixed. Pour in a circular motion over the cutlet. Cover immediately and cook 45 seconds over medium heat until the egg is set at the edges but visibly liquid in the center.
Place hot rice in a large bowl. Uncover the pan and immediately slide the katsudon topping over the rice without stirring. The egg should still look underdone — residual heat finishes it. Garnish with green onion and crumbled nori. Serve at once.
Use a small 22 cm pan and make one serving at a time — the ingredient ratios only work properly in a small pan.
The egg must be removed from heat while the center is visibly liquid — it finishes cooking over the hot rice in the bowl.
Day-old tonkatsu that has lost its crunch actually works beautifully for katsudon — the broth soak restores moisture and the crunch is not the priority in this dish.
Instant dashi (Hondashi powder) is perfectly acceptable here — the soy, mirin, and pork juices dominate the broth flavor.
Chicken katsudon: use chicken katsu (panko-breaded chicken thigh) instead of pork — lighter and equally delicious.
Hire katsudon: use pork fillet (hire) tonkatsu rather than loin for a leaner version.
Sosu katsudon: Nagoya style — tonkatsu served over rice with Worcestershire-based sauce instead of egg and dashi broth.
Katsudon must be eaten immediately — the egg overcooks and the crust fully softens within 10 minutes. Prepare fresh per serving. Pre-fried tonkatsu keeps refrigerated up to 2 days; reheat in oven at 190°C for 8 minutes before making katsudon.
Katsudon was created in the early 20th century in Tokyo — the Waseda University area restaurants near early Japanese universities claim early versions. It became famous through its association with academic and athletic luck (katsu = 'to win'), making it a ritual pre-exam meal eaten by generations of Japanese students. Today it appears on menus at every yoshoku restaurant and remains one of Japan's most ordered single-dish meals.
Yes, and many Japanese cooks consider day-old tonkatsu ideal for katsudon — the crust has softened just enough to absorb the broth without becoming completely soggy, and the pork stays juicy through the brief broth simmer.
This is correct technique. The egg continues cooking from residual heat — from the hot broth, the hot rice below, and the bowl itself. If it looks fully set in the pan, it will be overcooked by the time you eat it. Remove when the center is visibly trembling and translucent.
Japanese short-grain rice (koshihikari or similar) cooked plain without salt is the only correct choice. The slightly sticky, tender grains absorb the broth that seeps down from the topping, creating the dish's characteristic final bites.
Per serving (600g / 21.2 oz) · 2 servings total
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