Question: what is the difference between kosher coke and regular coke?
Answer: Coca-Cola is certified kosher year-round, but its high fructose corn syrup renders it unfit for consumption on Passover. Coke actually used to be made with sucrose (made from cane or beet sugar) instead of high fructose corn syrup, but when the switch was made, Coca-Cola sodas became off-limits on Passover.