Rodent Found in Miso Soup Prompts Plunge in Restaurant Chain Owner’s Stock

Shares of Zensho Holdings Co., which operates Japanese restaurant chain Sukiya, fell as much as 7.1%, the most since Feb. 13, after the firm said a customer had found a dead rodent in its miso soup.

Sukiya said the animal made its way into the soup while meals were being prepared at a branch in Tottori, western Japan, on Jan. 21, and that staff “failed to notice” it before serving. The chain said it would double down on hygiene measures in an announcement on March 22.