In a small bowl, combine Tonkatsu sauce ingredients. Set aside.
Slice through the pork fat on the side of the pork loins to prevent curling during cooking. Make the cuts about 1/2 inch apart from each other. Then, use the back of a knife to pound the pork loins to tenderize and flatten the meat into an even surface. It should be about ¾ inches thick.
Season the meat with salt and pepper on both sides.
In a large bowl, combine egg, milk, and flour until it’s a smooth thick consistency, similar to a thick pancake batter. If it’s too thin, add a little flour at a time to thicken it. If the batter is too thin it’ll make the panko soggy.
Pour panko breadcrumbs on a large plate.
Dip pork loin in the batter then in the panko one at a time. Press the panko into the pork loin to ensure it’s fully coated and the breadcrumbs stick.
Heat a large skillet or wok on medium-high heat. Add enough oil to deep or shallow fry and wait until it’s very hot. You can test it by sprinkling in a little panko into the oil. The breadcrumbs should float within 5 seconds. Add in pork loin and cook for 3 - 5 minutes per side, or until it’s golden and crispy on each side and cooked through.
Serve with shredded cabbage, hot steamy rice, and Tonkatsu sauce. Enjoy!
Notes
Ensure even frying & every bite is crunchy by following two key steps.
Cuts on Fat Edges: Prevent fat from curling by making small cuts along the pork loin's fat, keeping it flat during cooking.
Tenderize and Flatten: Use the back of a knife to pound the pork, tenderizing the meat and creating an even surface for all-around crispiness.