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A golden-brown, crispy chicken katsu cutlet drizzled with rich tonkatsu sauce, served with shredded cabbage and a lemon wedge.

Ultimate Tonkatsu Sauce Chicken Katsu

This recipe reveals the scientific secrets to achieving perfectly crisp, juicy Chicken Katsu with a homemade Tonkatsu sauce. Learn how to master the dredging process for a crust that won't fall off and fry at the ideal temperature for golden-brown perfection. The result is a restaurant-quality dish with a sauce boasting complex umami, tang, and aromatic depth.
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Prep Time 20 minutes
Cook Time 15 minutes
Total Time 35 minutes
Servings: 2
Course: Main Course
Cuisine: Japanese
Calories: 650
Ingredients Equipment Method Notes

Ingredients
  

  • 2 boneless, skinless chicken breasts about 6 oz each
  • 1/2 cup all-purpose flour
  • 2 large eggs, beaten
  • 1 1/2 cups Japanese panko breadcrumbs
  • 1 tsp kosher salt
  • 1/2 tsp white pepper
  • Neutral oil for frying vegetable, canola, or peanut
  • 1/4 cup ketchup
  • 2 tbsp Worcestershire sauce
  • 1 tbsp soy sauce
  • 1 tbsp mirin
  • 1 tsp Dijon mustard
  • 1/2 tsp grated fresh ginger
  • 1 small garlic clove, finely minced or grated
  • A pinch of freshly ground black pepper

Equipment

  • Plastic wrap
  • Meat mallet or rolling pin
  • 3 shallow dishes
  • Whisk
  • Small bowl
  • Heavy skillet (cast iron recommended)
  • Cooking thermometer
  • Wire rack
  • Baking sheet
  • Tongs
  • Knife
  • Cutting board

Method
 

  1. Butterfly each chicken breast by slicing horizontally through the middle, stopping before cutting all the way through, then open it like a book.
  2. Place each breast between two sheets of plastic wrap and pound gently to an even 1/2-inch thickness. Season both sides with salt and white pepper.
  3. Set up a dredging station with three shallow dishes: one with flour, one with beaten eggs, and one with panko breadcrumbs.
  4. Dredge a chicken cutlet in flour, shaking off the excess. Dip it completely in the egg wash, allowing excess to drip off.
  5. Press the cutlet firmly into the panko, ensuring an even, generous coat. Place on a wire rack and repeat with the remaining chicken. Let rest for 5-10 minutes to set the coating.
  6. While the chicken rests, make the sauce: whisk all sauce ingredients (ketchup, Worcestershire, soy sauce, mirin, Dijon mustard, ginger, garlic, black pepper) in a small bowl until fully combined.
  7. In a heavy skillet, heat 1/2 inch of neutral oil to 350°F (175°C).
  8. Carefully add one or two breaded cutlets to the hot oil without crowding the pan. Fry for 3-4 minutes per side, until deeply golden brown and the internal temperature reaches 165°F (74°C).
  9. Transfer the cooked katsu to a wire rack set over a baking sheet to drain. Let rest for 2-3 minutes before slicing against the grain.
  10. Serve immediately with shredded cabbage, steamed rice, and a generous drizzle of the homemade tonkatsu sauce.

Notes

For the crispiest result, let the breaded chicken rest on a wire rack before frying to allow the coating to hydrate and set. Always drain fried katsu on a wire rack, not paper towels, to keep the bottom from getting soggy. The sauce can be made ahead and stored in the refrigerator for up to a week; its flavor improves as it melds. For a baked alternative, bake breaded cutlets on a wire rack set over a baking sheet at 425°F (220°C) for 15-20 minutes, flipping halfway, until golden and cooked through.