Juicy Menchi Katsu with Tonkatsu Sauce

Why You’ll Love This Recipe

• Ultra-juicy patties thanks to milk-soaked panko and sautéed onions.
• Shatteringly crisp panko crust from a quick double-fry.
• Balanced seasoning—savory, slightly sweet, and perfect with tangy tonkatsu sauce.
• Comforting but weeknight-friendly, with make-ahead and freezer tips.

Grocery List

• Produce: 1 small onion, green cabbage (for shredding), lemon (optional)
• Dairy: Milk, eggs
• Pantry: Ground beef, ground pork, panko breadcrumbs, all-purpose flour, soy sauce, Worcestershire sauce, ketchup, sugar, rice vinegar, neutral oil (canola/peanut), rice, salt, pepper, ground nutmeg

Full Ingredients

Menchi Katsu Patties

• 8 oz (225 g) ground beef
• 8 oz (225 g) ground pork
• 1 small onion (about 150 g), finely diced
• 1 tbsp neutral oil (for sautéing onion)
• 3/4 cup (35 g) panko breadcrumbs
• 1/3 cup (80 ml) milk
• 1 large egg
• 1 tbsp soy sauce
• 1 tsp kosher salt (reduce to 3/4 tsp if using fine table salt)
• 1/2 tsp freshly ground black pepper
• 1/4 tsp ground nutmeg

Breading & Frying

• 2/3 cup (85 g) all-purpose flour
• 2 large eggs, beaten
• 2 cups (90 g) panko breadcrumbs
• 6–8 cups (1.5–2 L) neutral oil for frying (about 1.5 inches / 4 cm deep in a Dutch oven)

Quick Tonkatsu Sauce (makes about 1/2 cup)

• 1/4 cup (60 g) ketchup
• 2 tbsp (30 ml) Worcestershire sauce
• 1 tbsp (15 ml) oyster sauce or soy sauce
• 1 tsp (5 g) sugar
• 1 tsp (5 ml) rice vinegar
• Optional: 1/2 tsp Dijon mustard

For Serving

• 4 cups finely shredded green cabbage
• 3–4 cups hot cooked Japanese short-grain rice
• Lemon wedges and Japanese karashi mustard (optional)

Step-by-Step Instructions

Step 1: Soak the panko and sauté the onions

Combine 3/4 cup panko and 1/3 cup milk in a small bowl; let stand 10 minutes until the crumbs are fully hydrated. Meanwhile, heat 1 tbsp oil in a skillet over medium heat. Add the diced onion and a pinch of salt; cook, stirring, until translucent and sweet, 5–6 minutes. Spread on a plate to cool to room temperature.

Step 2: Mix the patties

In a large bowl, add the ground beef, ground pork, cooled onions, soaked panko, 1 egg, soy sauce, salt, pepper, and nutmeg. Mix with your hands until the mixture becomes tacky and cohesive, about 1–2 minutes. Pick up the mixture and slap it back into the bowl 20–30 times to develop structure—this helps the patties hold together and stay juicy.

Step 3: Shape and chill

Divide the mixture into 6 equal portions (about 115–120 g each). With wet hands, form oval patties 3/4-inch (2 cm) thick. Press firmly to remove air pockets and slightly indent the center of each patty with your thumb to prevent bulging. Place on a parchment-lined tray, cover, and chill for 20 minutes to firm up.

Step 4: Set up breading and heat the oil

Pour oil into a deep, heavy pot to a depth of about 1.5 inches (4 cm). Heat to 340°F (170°C). Set up three shallow dishes: one with flour, one with beaten eggs, and one with 2 cups panko. Place a wire rack over a sheet pan for draining.

Step 5: Bread the patties

Working one at a time, dredge each patty in flour (shake off excess), dip in egg (let extra drip away), then coat thoroughly in panko, pressing gently so the crumbs adhere. Set on the rack while the oil returns to temperature.

Step 6: Fry, then rest

Fry 3 patties at a time at 340°F (170°C) for 3.5–4 minutes per side until deep golden. Keep the oil between 330–350°F (165–177°C). Transfer to the rack and rest 2–3 minutes. The interior should be around 150°F (66°C) at this stage.

Step 7: Quick second fry for extra crunch

Increase oil to 360°F (182°C). Return patties to the oil for 45–60 seconds per side to re-crisp and bring the center to 160°F (71°C). Drain on the rack and rest 5 minutes so juices redistribute.

Step 8: Sauce and serve

Whisk ketchup, Worcestershire, oyster (or soy) sauce, sugar, rice vinegar, and optional Dijon until smooth. Pile shredded cabbage on plates, add a lemon wedge if using, and a scoop of hot rice. Slice the menchi katsu in half to show the juicy center, drizzle with tonkatsu sauce, and serve immediately (karashi on the side if you like heat).

Pro Tips

• Cool the onions completely before mixing—warm onions can make the patties loose.
• Knead the meat until tacky; this develops myosin, helping the patties bind without bread-tie strings or overusing flour.
• Keep patties an even thickness and press out air pockets to avoid cracking during frying.
• Use a thermometer for the oil and the patties—temperature control is the secret to crisp crust and a juicy center.
• Drain on a wire rack, not paper towels, to keep the crust crunchy.

Variations

• Cheese-Stuffed: Encase a 1/2 oz (15 g) cube of low-moisture mozzarella or mild cheddar in each patty for a melty center.
• Miso-Shiso: Add 1 tbsp white miso to the mix and fold in 4 finely sliced shiso leaves for an herby-savoury twist.
• Curry Katsu: Mix 1–2 tsp Japanese curry powder into the meat and add a pinch to the dredge for gentle warmth.

Storage & Make-Ahead

Refrigerate cooked menchi katsu in an airtight container for up to 3 days; reheat on a rack at 375°F (190°C) for 10–12 minutes or in an air fryer at 360°F (182°C) for 5–7 minutes. Freeze breaded, uncooked patties on a sheet pan, then store in a zip-top bag for up to 1 month. Fry from frozen at 330–340°F (165–170°C) for 5–6 minutes per side, then finish with a quick 360°F (182°C) crisp. Tonkatsu sauce keeps refrigerated up to 2 weeks.

Nutrition (per serving)

Approximate per serving (1.5 patties, sauce, and 3/4 cup cooked rice): 780 calories; 34 g protein; 88 g carbohydrates; 31 g fat; 6 g fiber; 1,450 mg sodium. Values will vary with oil absorption and exact ingredients.