Tonpeiyaki is a type of teppanyaki dish that originated in Osaka, influenced by Russian cuisine. It consists of grilled pork and vegetables wrapped in a thin layer of egg, topped with mayonnaise and sauce. This dish is commonly found at okonomiyaki restaurants and izakayas in the Kansai region, and is considered a signature dish of the area. The name comes from “Ton” (pork), “Pei” (flat), and “Yaki” (grilled), meaning “flat-grilled pork.”