Gangsyep Gyeongyangsik is a tonkatsu restaurant in Seoul that serves both old-style tonkatsu and Japanese-style tonkatsu. Its katsu uses thick, tender meat with a crisp coating, and the menu also includes cheese tonkatsu, udon, and buckwheat noodles. The food arrives quickly after ordering, and the old-style tonkatsu sauce sits beneath the coating, helping it stay crisp longer. The Japanese-style tonkatsu portion is small, while the main tonkatsu could be thicker.