Korokke is Japanese croquette. If you order it at a Japanese restaurant, you get something that is mostly potato, not very tasty, and often over-fried. Annie made this from scratch as part of a whole Japanese dinner she had planned.
3+ lbs of mashed potatoes, a chopped onion, browned ground beef, a little Worchestershire sauce, and a little ground nutmeg. Mix well and refrigerate for 20 minutes.
Shape into patties
Dip them in some beaten egg, then dredge them in panko. Deep fry in hot oil until golden brown and delicious. Drain on some paper towels.
Serve with tonkatsu sauce. (My sauce was made with Worchestershire, ketchup, dijon mustard, sugar, shoyu, and a little ground allspice.)
Aloha, Nate