Diet Coke
Diet Coke does not use a modified form of the Coca-Cola recipe, but instead an entirely different formula. The controversial New Coke, introduced in 1985, used a version of the Diet Coke recipe that contained high fructose corn syrup and had a slightly different balance of ingredients. In 2004, Coca-Cola introduced Coca-Cola C2, which it claims tastes much closer to Coca-Cola but contains half the carbohydrates. In 2005, the company introduced Coca-Cola Zero (replaced by "Coca-Cola Zero Sugar" in 2017), a sugar-free variation of regular Coca-Cola.
New Coke
They were, nonetheless, joined by some voices from outside the region. "Chicago Tribune" columnist Bob Greene wrote some widely reprinted pieces ridiculing the new flavor and damning Coke's executives for having changed it. Comedians and talk show hosts, including Johnny Carson and David Letterman, made regular jokes mocking the switch. Ads for New Coke were booed heavily when they appeared on the scoreboard at the Houston Astrodome. Even Fidel Castro, a longtime Coca-Cola drinker, contributed to the backlash, calling New Coke a sign of American capitalist decadence. Goizueta's father expressed similar misgivings to his son, who later recalled that it was the only time his father had agreed with Castro, whose rule he had fled Cuba to avoid.