Since its introduction in 1886, Coca-Cola Classic has been enjoyed for decades, even as its formula remains one of the food industry's biggest trade secrets.
The company says the drink includes carbonated water (roughly 90%), sugar, phosphoric acid, caffeine, caramel color, and natural flavors, the essence of the secret formula.
Among these flavors is coca plant leaf extract and, formerly, caffeine-packed kola nuts. Vanilla, cinnamon, citrus oils, nutmeg, and other trace flavors add to Coke’s taste.