Following years of reformulating at McDonald's, most of the burgers itserves in the U.S. are now preservative-free.
As of Wednesday, the world's largest burger chain says classics like theBig Mac and Quarter Pounder with Cheese are preservative-free, with reformulatedbuns and sauces.
Pickles on the sandwiches still contain artificial preservatives, butcustomers can request sandwiches without pickles.
McDonald's has been gradually removing preservatives from its menu forseveral years in an effort to appeal to more health-conscious buyers.
In 2016, it removed high-fructose corn syrup from its buns and tookartificial preservatives out of its Chicken McNuggets.
The Chicago-based company says around one-third of its sandwiches stillhave artificial colors, flavors or preservatives, including Egg McMuffins andFilet-O-Fish.
It hasn't set a timeline for removing those ingredients.