The color red has become synonymous with Coca-Cola — so why are loyal customers seeing bottles with a yellow cap in the spring? The yellow top indicates that the bottle is kosher for Passover ...

Today, bottles of Coca-Cola that are kosher for Passover have yellow caps instead of the traditional red ones. In addition to the yellow cap, the bottle has a Passover certification symbol.

This image from Coca-Cola's filling line gives a clear view of the plastic cap still in use "We have a good understanding already of what the bottle will go through as we put it into the real world.

Opening with the familiar sounds of a metal cap snapping off a bottle and the pouring of fizzy Coke, the playful Under the Cap videos allow viewers to peek behind-the-scenes – or “under the ...