01 -
In a shallow bowl, vigorously whisk together eggs, flour, garlic powder, 1/2 teaspoon kosher salt, and 1/4 teaspoon black pepper until the mixture is smooth. Place panko breadcrumbs in a separate shallow bowl.
02 -
Pat each fish fillet dry using paper towels. Season both sides evenly with kosher salt and freshly ground black pepper.
03 -
Dip each seasoned fish fillet into the egg-flour mixture, coating thoroughly. Transfer immediately to the panko breadcrumbs, gently pressing to achieve an even, firm layer.
04 -
Pour oil into a heavy skillet to a 6 mm depth. Heat over medium until shimmering and a breadcrumb dropped in sizzles instantly.
05 -
Fry breaded fish fillets in batches, turning once halfway, until golden brown and cooked through, approximately 2 to 3 minutes per side. Remove cooked fillets and drain on a plate lined with paper towels. Lightly sprinkle with a pinch of salt while still hot.
06 -
Place a slice of American cheese on the bottom half of each toasted potato bun. Arrange a hot fried fish fillet on top, followed by a generous spoonful of tartar sauce. Close each sandwich with the top bun and serve immediately, with extra tartar sauce available on the side.