Coca-Cola has brought back its annual yellow caps to mark the Jewish holiday of Passover, prompting excitement and a surge in buying. Each spring, the company releases a limited batch of bottles made with cane sugar instead of high fructose corn syrup, making the drink suitable for those observing dietary restrictions during the holiday.

The tradition dates back to 1935, when a rabbi in Atlanta encouraged the company to create a version that could be enjoyed during Passover. Since then, the yellow cap has become a seasonal signal that the soda inside is made with cane sugar and approved for the holiday.

This version has gained popularity beyond religious observers because it closely resembles the cane sugar recipe found in imported Mexican Coca-Cola, often sold at a higher price. Shoppers have taken to social media to urge others to stock up before the limited supply disappears, fueling a yearly buying frenzy in grocery stores.