Beni shōga

Beni shōga (紅生姜) is a type of tsukemono (Japanese pickle). It is made from thin strips of ginger pickled in umezu (梅酢), the pickling solution used to make umeboshi. The red color is traditionally derived from red perilla (Perilla frutescens). Commercial beni shōga often derives its hue from artificial coloring, to a garish effect. It is served with many Japanese dishes, including gyūdon, okonomiyaki, and yakisoba.