Katsu and katsudon are two beloved Japanese dishes built on the same crispy breaded cutlet, but they are served very differently. Katsu is a standalone cutlet—usually pork or chicken—breaded in panko and fried until golden, often eaten with rice and a tangy tonkatsu sauce. Katsudon takes that same cutlet and simmers it in a sweet-savory dashi broth with onions and egg, then serves it over a bowl of steamed rice. This article breaks down the differences and gives you a complete recipe for both, so you can make either depending on your mood.
Ingredients
For the Katsu (makes 4 cutlets)
- 4 boneless pork loin chops or chicken breasts (about 5 oz / 140 g each), pounded to ½-inch (1.25 cm) thickness
- 1 tsp (5 g) salt
- ½ tsp (2 g) black pepper
- ½ cup (60 g) all-purpose flour
- 2 large eggs, beaten
- 2 cups (100 g) panko breadcrumbs
- Vegetable oil for frying (about 2 cups / 480 ml)
For the Tonkatsu Sauce (optional, for katsu)
- ¼ cup (60 ml) ketchup
- 2 tbsp (30 ml) Worcestershire sauce
- 1 tbsp (15 ml) soy sauce
- 1 tbsp (15 g) brown sugar
- 1 tsp (5 ml) mirin (optional)
For the Katsudon (per bowl, adjust for 4)
- 1 cup (240 ml) dashi (or 1 cup water + 1 tsp dashi granules)
- 2 tbsp (30 ml) soy sauce
- 2 tbsp (30 g) sugar
- 1 tbsp (15 ml) mirin
- 1 medium onion, thinly sliced
- 4 large eggs, lightly beaten (for 4 bowls, use 1 egg per bowl)
- 4 cups (600 g) cooked Japanese short-grain rice (from about 2 cups raw)
- 4 katsu cutlets (from above), sliced into 1-inch (2.5 cm) strips
- Thinly sliced green onions for garnish (optional)
Instructions
Make the Katsu
- Season the pounded meat with salt and pepper on both sides.
- Dredge each piece in flour, shaking off excess. Dip into beaten egg, then coat generously with panko, pressing lightly to adhere.
- Heat oil in a deep skillet or pot to 350°F (175°C). Fry the cutlets in batches (do not overcrowd) for 3–4 minutes per side, until golden brown and cooked through. For pork, the safe minimum internal temperature is 145°F (63°C) with a 3-minute rest; for chicken, it’s 165°F (74°C). Use a food thermometer to check. Drain on a wire rack.
- If making katsu, slice the cutlet into strips and serve with rice, shredded cabbage, and tonkatsu sauce. If making katsudon, proceed to the next steps.
Make the Tonkatsu Sauce (if serving as katsu)
- In a small bowl, whisk together ketchup, Worcestershire sauce, soy sauce, brown sugar, and mirin (if using). Set aside.
Make the Katsudon
- In a small skillet or saucepan, combine dashi, soy sauce, sugar, and mirin. Bring to a simmer over medium heat.
- Add the sliced onion and cook for 2–3 minutes until slightly softened.
- Place the sliced katsu strips into the simmering broth, arranging them in a single layer.
- Slowly pour the beaten egg over the top, covering the cutlet and onion. Cover the pan and cook for 1–2 minutes, until the egg is just set but still slightly runny (or fully set if you prefer).
- Serve immediately over a bowl of hot steamed rice. Garnish with green onions if desired.
Tips
- Pounding the meat: Place the meat between two sheets of plastic wrap and pound to even thickness. This ensures even cooking and tenderness.
- Panko substitution: If you can’t find panko, use regular breadcrumbs, but the texture will be less crispy. For a gluten-free option, use crushed cornflakes or gluten-free panko.
- Don’t overcrowd the pan: Frying too many cutlets at once lowers the oil temperature, making them greasy. Fry in batches and keep cooked cutlets warm in a 200°F (95°C) oven.
- Egg doneness: In katsudon, the egg should be just set but still silky. If you prefer it fully cooked, simmer a little longer.
Serving Suggestions
For katsu, serve with steamed rice, shredded cabbage, and a squeeze of lemon. Tonkatsu sauce is essential—it’s tangy and sweet. For katsudon, serve in a deep bowl with the rice underneath and the egg-topped cutlet on top. Add a side of pickled vegetables (tsukemono) or a simple miso soup to round out the meal.
Variations
- Chicken katsu: Use chicken breast or thigh instead of pork. Adjust cooking time and ensure it reaches 165°F (74°C).
- Katsudon with cheese: Add a slice of cheese (like cheddar or mozzarella) on top of the cutlet before adding the egg for a creamy twist.
- Vegetarian katsu: Use thick slices of firm tofu or a large portobello mushroom. Press tofu well to remove excess water before breading.
- Curry katsu: Serve the cutlet with Japanese curry sauce instead of tonkatsu sauce.
Storage and Reheating
Both dishes are best eaten fresh, but leftovers can be stored in an airtight container in the refrigerator for up to 3 days. For katsu, reheat in a 350°F (175°C) oven for 5–7 minutes to regain crispiness. For katsudon, reheat in a skillet over medium heat with a splash of water or dashi, covered, until heated through—about 3–4 minutes. Do not microwave katsudon as the egg can become rubbery. Freezing katsu is possible for up to 1 month; reheat from frozen in the oven at 375°F (190°C) for 10–12 minutes. Katsudon does not freeze well due to the egg and rice texture.
Frequently Asked Questions
Can I use pork loin instead of pork tenderloin for katsu? Yes, pork loin is actually the classic choice. It has enough fat to stay juicy. Tenderloin works too but is leaner, so be careful not to overcook.
What is the difference between tonkatsu and katsudon? Tonkatsu is the breaded, fried cutlet served with sauce and cabbage. Katsudon is that same cutlet simmered in broth with egg and onions, served over rice. The cooking method and presentation are different.
Can I make katsudon without dashi? Yes, you can substitute water with a teaspoon of dashi granules, or use a mix of 1 cup water, 1 teaspoon soy sauce, and a pinch of kombu (kelp) powder. The flavor will be slightly less complex but still good.
Why is my panko not sticking to the meat? Make sure the meat is dry before dredging in flour. The egg wash should be beaten well, and press the panko firmly onto the meat. Letting the breaded cutlets rest for 5 minutes before frying also helps the coating adhere.
Can I bake the katsu instead of frying? Yes, you can bake at 425°F (220°C) for 15–20 minutes, flipping halfway. Spray with oil for a golden crust. The texture will be less crispy than fried, but it’s a healthier option.
Is katsudon traditionally served for breakfast? In Japan, katsudon is often eaten as a quick lunch or dinner. It’s also a common “comfort food” and is sometimes associated with exams because “katsu” sounds like the Japanese word for “win.”
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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