KATSU鑫 is a Japanese-style tonkatsu and katsudon shop in Zhongshan, Taipei. Its signature dishes are aged pork cutlet over rice and a cutlet rice bowl topped with a soft-set egg. Diners write their name on the waiting board at the entrance and wait to be seated, and the interior seating is mostly counter-style. Weekend waits run about 40 minutes, and weekday evening waits run 20 to 30 minutes.