One of the most interesting differences is the sweetener.
Regular Coca-Cola sold in the United States typically uses high-fructose corn syrup. Some Jewish communities avoid corn and certain other ingredients during Passover, so the standard recipe may not meet their requirements.
To accommodate these consumers, the special version is made with sugar, commonly cane sugar, instead of high-fructose corn syrup.
This allows eligible consumers to enjoy a familiar beverage while observing their holiday traditions.
However, the yellow cap alone is not enough to confirm that a
