Coca-Cola formula version of Coca-Cola syrup contains kola nut extract; originally included for its caffeine content, modern Coca-Cola uses caffeine citrate produced by the decaffeination of coffee. The primary taste of Coca-Cola is thought to come from vanilla and cinnamon, with trace amounts of essential oils, and spices such as nutmeg. A 2015 study identified and measured 58 aroma compounds in common colas, confirming significant amounts of compounds corresponding to cinnamon, vanilla, nutmeg, orange and lemon essential oils in Coca Cola. During the 1980s, most U.S. Coca-Cola bottlers switched their primary sweetening ingredient from cane sugar (sucrose) to the cheaper high-fructose corn
Coca-Cola Cherry the summer of 1985. Cherry Coke, which by 2007 had been renamed Coca-Cola Cherry in the U.S. and some other countries, was the third variation of Coca-Cola at that time – the others being regular Coca-Cola and Diet Coke – and the first flavored Coke. It was released nationally around the same time as the controversial reformulation of Coca-Cola, (New Coke), and gained significant market share when that product was widely discontinued in the early 1990s. Diet Cherry Coke was introduced in 1986, and renamed "Diet Coke Cherry" in 2005 and again to "Diet Coke Feisty Cherry" in 2018. A