Cola by citric or other isolated acids. Coca-Cola's recipe is maintained as a corporate trade secret. A variety of different sweeteners may be added to cola, often partly dependent on local agricultural policy. High-fructose corn syrup (HFCS) is predominantly used in the United States and Canada due to the lower cost of government-subsidized corn. In Europe, however, HFCS is subject to production quotas designed to encourage the production of sugar; sugar is thus typically used to sweeten sodas. In addition, stevia or an artificial sweetener may be used; "sugar-free" or "diet" colas typically contain artificial sweeteners only. In the 1940s, Coca-Cola
Caffeine-Free Coca-Cola Caffeine-Free Coca-Cola Caffeine-Free Coca-Cola was introduced in 1983 as a caffeine-free variant of Coca-Cola. It was introduced to compete against Pepsi Free, which is now called Caffeine-Free Pepsi. The diet variant, Caffeine-Free Diet Coke, was the first variant of Diet Coke and was introduced in 1984, one year before the regular Coke version. In 2013, Caffeine-Free Coca-Cola Zero was introduced in America. In April 1985, Caffeine-Free Coca-Cola was switched to the ill-fated New Coke formula and did not switch back to the Coca-Cola Classic formula until 1989. The word "Classic" was removed from the label in spring 2011 in the