What is the main difference between Coca-Cola sold in the US, and the Coca-Cola sold in the EU?
Sugar. In the United States, Coca-Cola uses high-fructose corn syrup instead of sugar (sacharose) as its main sweetener. There is a small production of sugar-based "Kosher for Passover" Coca-Cola, as Ashkenazi Jews do not consume high fructose corn syrup during Passover.