→ Potato and Meat Mixture
01 -
Russet potatoes, peeled and quartered (2 pounds, about 4 medium)
02 -
Large onion, finely minced (9.6 oz, 272g)
03 -
Neutral cooking oil (1 tablespoon)
04 -
Ground beef, 85% lean (1 pound)
05 -
Diamond Crystal kosher salt, divided (1 teaspoon total)
06 -
Freshly ground black pepper, divided (½ teaspoon total)
07 -
Unsalted butter (1 tablespoon)
→ Breading
08 -
All-purpose flour (½ cup)
09 -
Panko Japanese breadcrumbs (2 cups)
10 -
Large eggs (3, 50g each without shell)
→ For Deep Frying
11 -
Neutral oil for frying (4 cups, or enough for 2-inch depth)
→ For Serving
12 -
Tonkatsu sauce