28 Jan 2019 --- It was Ruby Sunday on the first day of ISM 2019 in Cologne, Germany, as the “fourth type of chocolate” was given its first moment in the major trade show spotlight at the world’s leading sweets and snacks fair yesterday. Just over one year after Nestlé debuted their KitKat Ruby in Japan and South Korea, at least eleven chocolate manufacturers are presenting new ruby chocolate products, from hollows to pralines, at the event.