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1
Lay the pork cutlets flat. Using a sharp knife, score through the fat cap at the edge of each rosu cutlet at 2 cm intervals — this is the incising technique that prevents the fat from curling during frying and ensures the cutlet lies flat in the oil. Pat the meat dry.
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2
Set up a three-stage breading station: flour on one tray, beaten egg in a shallow bowl, panko on a second tray. Dredge each cutlet in flour, shake off the excess, pass it through the egg wash until fully coated — the egg is the adhesive layer without which the panko will fall away during frying — then press firmly into the panko on both faces and all edges. The coating should be even and fully adhered with no bare patches visible.
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3
Heat the oil in a deep, heavy pot to 165°C for rosu (2–2.5 cm thick) or 175°C for hire (1.5 cm thick). Verify temperature with a thermometer before committing the cutlets. Lower each breaded cutlet gently into the oil. Fry rosu for approximately 4–5 minutes until the crust is pale golden — this is 80% doneness. Do not crowd the pot; one or two cutlets at a time preserves oil temperature.
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4
This is the step on which the dish lives or dies: lift the cutlets from the oil, transfer to a wire rack, and rest for exactly 3 minutes. Residual heat continues to carry the pork interior to doneness during this interval. Then return the cutlets to oil raised to 180°C and fry for a further 30 seconds. The exterior must emerge deeply golden, dry, and audibly crackling when tapped — this double-frying sequence delivers a properly cooked interior and a superior, open crust that resting alone cannot achieve.
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5
Transfer to a wire rack for no more than 2–3 minutes. Do not rest longer: steam from the meat will condense against the interior of the crust and soften it from within. Using a sharp, thin-bladed knife, slice each cutlet into 2 cm strips with a single downward motion — a dull knife or sawing action crushes the panko structure. The cross-section should show a clean, crisp crust surrounding a uniformly white-to-faintly-pink, juicy interior.
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6
For the house tonkatsu sauce, combine Worcestershire sauce, mirin, and fruit purée; stir to integrate. For the Nagoya misokatsu variant, combine Hatcho miso, dashi, sugar, and mirin in a small saucepan over medium heat; reduce, stirring constantly, until the sauce is thick enough to coat the back of a spoon and pourable in a slow, paintable stream. The miso sauce is poured directly over the plated cutlet, not offered on the side.
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7
Plate the sliced katsu alongside a mound of finely shredded raw cabbage. If following the Katsukura sesame-grinding ritual, bring whole sesame seeds and a mortar to the table; guests grind their own seeds and stir them into the tonkatsu sauce immediately before eating. The freshly ground sesame releases aromatic oils noticeably superior to pre-ground.