Coca-Cola bottles have a yellow cap for Passover. The typical, red-capped Coca-Cola is already kosher year-round but it contains corn syrup, which is not considered kosher for Passover.

Why this kosher-for-Passover Coke with the yellow cap is going viral The limited-time Coca-Cola product is made with cane sugar rather than high-fructose corn syrup. Some people can’t get enough.

There's a reason why those yellow cap Coke bottles appear only once a year: It signifies that the drink is kosher for Passover. The post If You See a Yellow Cap on Coca-Cola, This Is What It Means ...

Here's why some Coca-Cola bottles have yellow caps during the Jewish holiday of Passover. The yellow caps signify that the soda inside is kosher for Passover.