The first ZERO bar was originally introduced as the Double Zero Bar in 1920 and later renamed ZERO in 1934. The double zero was meant to suggest that the bar was “cool” as in the temperature. ZERO was created by the Hollywood Brands Candy Company of Minneapolis, Minnesota. But the bar was manufactured in Centralia, Illinois. The bar consists of caramel, peanut, and almond nougat all covered in a white chocolate fudge.