Yellow cap Coke is Kosher. Oh yes, and it tastes better for Coke drinkers
(www.foodandwine.com)https://www.foodandwine.com/why-do-some-coca-cola-bottles-have-yellow-caps-8622947Coke uses nasty high fructose corn syrup except for kosher Coke, which uses real sugarcane sugar. It's how they did it for many decades.
