Crispy Korokke with Tonkatsu Sauce and Cabbage

Why You’ll Love This Recipe

• Creamy mashed potato inside, ultra-crispy panko outside—comforting and crunchy in every bite.
• Two fillings: savory ground beef or sweet corn, both balanced by bright, crisp shredded cabbage.
• Foolproof breading and frying tips for restaurant-quality korokke at home.
• Great make-ahead snack or dinner—freezes beautifully and reheats crisp.

Grocery List

• Produce: Yukon Gold potatoes, 1 medium onion, green cabbage, lemons
• Dairy: Unsalted butter, eggs
• Pantry: Panko breadcrumbs, all-purpose flour, neutral frying oil, soy sauce, ketchup, Worcestershire sauce, sugar, salt, black pepper

Full Ingredients

Potato Base

• 2 lb (900 g) Yukon Gold potatoes, peeled and cut into 1.5-inch chunks
• 2 tbsp (28 g) unsalted butter
• 1 tsp kosher salt (for seasoning potatoes), plus more for the cooking water
• 1/2 tsp freshly ground black pepper

Aromatics

• 1 tbsp neutral oil (canola, vegetable, or grapeseed)
• 1 medium onion (about 150 g), finely diced

Filling (choose one)

• Beef Option: 8 oz (225 g) ground beef, 1 tbsp soy sauce
• Corn Option (Vegetarian): 1 cup (160 g) corn kernels (fresh or frozen), 1 tsp soy sauce

Breading & Frying

• 1/2 cup (60 g) all-purpose flour
• 2 large eggs, beaten
• 2 cups (120 g) panko breadcrumbs
• 4–5 cups (1–1.25 L) neutral oil, for frying (enough for 1.5 inches depth)

To Serve

• 4 cups (300 g) finely shredded green cabbage
• Lemon wedges
• 1/3 cup tonkatsu sauce (store-bought), or make a quick version below

Quick Tonkatsu Sauce (optional)

• 3 tbsp (45 g) ketchup
• 1 tbsp (15 ml) Worcestershire sauce
• 2 tsp (10 ml) soy sauce
• 1 tsp (4 g) sugar

Step-by-Step Instructions

Step 1: Cook and mash the potatoes

Place the potatoes in a large pot, cover with cold water by 1 inch, and add a generous pinch of salt. Bring to a boil over high heat, then reduce to a lively simmer and cook until very tender, 12–15 minutes. Drain thoroughly and return the potatoes to the hot pot for 1–2 minutes to steam-dry. Mash with the butter, 1 tsp kosher salt, and 1/2 tsp pepper until smooth but not gluey. Set aside to cool for about 10 minutes.

Step 2: Sauté onion and prepare your filling

Heat 1 tbsp neutral oil in a large skillet over medium heat. Add the diced onion and cook, stirring, until soft and translucent with light golden edges, 4–6 minutes. For the beef version: add ground beef and 1 tbsp soy sauce. Cook, breaking it up, until no pink remains and most moisture has evaporated, 3–5 minutes. For the corn version: add corn and 1 tsp soy sauce; cook 2–3 minutes until heated through and the pan is relatively dry. Remove from heat and let cool slightly.

Step 3: Combine filling with potatoes and chill

Fold the onion-and-filling mixture into the mashed potatoes until evenly distributed. Taste and adjust salt if needed. Refrigerate the mixture, uncovered, for 15–20 minutes to firm up; this makes shaping easier.

Step 4: Shape the korokke

With damp hands, scoop and shape the mixture into 12 ovals about 2.5 inches wide and 3/4 inch thick (roughly 60–65 g each). Place on a parchment-lined sheet pan.

Step 5: Set up the breading station

Place flour in one shallow dish, beaten eggs in a second, and panko in a third. Working one piece at a time, coat each oval lightly in flour (tap off excess), dip in egg, then press into panko to fully cover. Return to the sheet pan.

Step 6: Chill while heating oil

Refrigerate the breaded korokke for 15 minutes to set the crust. Meanwhile, pour 4–5 cups (1–1.25 L) of neutral oil into a deep, heavy pot to a depth of about 1.5 inches and heat to 350°F/175°C. Set a wire rack over a baking sheet for draining.

Step 7: Fry to a deep golden crunch

Fry in batches without crowding, maintaining 325–350°F (163–175°C). Cook 3–4 minutes per side (or 4–5 minutes total, turning as needed) until deep golden brown. Transfer to the rack and immediately season with a pinch of salt. Allow the oil to recover between batches.

Step 8: Plate and serve

Mound shredded cabbage on plates and add lemon wedges. Arrange korokke alongside, then drizzle or serve with tonkatsu sauce for dipping. Enjoy hot while the exterior is ultra-crisp and the center is creamy.

Pro Tips

• Use Yukon Gold potatoes for a naturally creamy, cohesive mash that shapes well.
• Keep the filling relatively dry—cook off excess moisture so the patties don’t crack when frying.
• Chilling twice (after mixing and after breading) helps korokke hold their shape and fry evenly.
• Lightly crush panko with your hands for a tighter, more even crust that browns uniformly.
• For extra crunch, double-fry: give each piece a 1-minute second fry at 350°F/175°C right before serving.

Variations

• Cheese Center: Press a small cube of low-moisture mozzarella into the center of each patty and seal well before breading.
• Curry Korokke: Mix 1–2 tsp Japanese curry powder into the mashed potatoes for gentle warmth and aroma.
• Kabocha Blend: Swap 1/3 of the potatoes for steamed mashed kabocha squash for a slightly sweet, golden interior.

Storage & Make-Ahead

Shape and bread korokke up to 24 hours ahead; keep covered and chilled. To freeze, place breaded, uncooked korokke on a sheet pan until firm, then store in a freezer bag up to 1 month. Fry from frozen at 325–350°F (163–175°C) 6–8 minutes until heated through and golden. Leftover fried korokke keep refrigerated 2 days; reheat on a rack in a 375°F/190°C oven or air fryer 7–12 minutes until crisp and hot.

Nutrition (per serving)

Approximate for beef version (3 korokke with sauce and cabbage): 620 calories; 30 g fat; 68 g carbs; 19 g protein; 2 g fiber; 900 mg sodium. Corn version: about 540 calories; 26 g fat; 74 g carbs; 11 g protein; 3 g fiber; 850 mg sodium. Values will vary with oil absorption and exact ingredients.