Can you guess which one?

By Meghan Overdeep
January 5, 2019
Justin Sullivan/Getty Images

If you thought all of the egg sandwiches on McDonald’s famous all-day breakfast menu are created equal, think again. Apparently, only one breakfast sandwich is made with fresh, whole eggs.

Any ideas which one?

According to Business Insider, that mouth-watering distinction lies with the beloved Egg McMuffin, which is made with whole USDA Grade A eggs that are freshly cracked and cooked in restaurants, free of additives.

The fast food chain’s other egg sandwiches aren’t so lucky. These are reportedly made with a mixture of whole eggs, liquid eggs and frozen eggs along with various additives for texture, flavor and shelf-life.

WATCH: McDonald's Apple Pie Was Born in This Southern City

Scrambled eggs, for example, are cooked fresh to order, but from liquid eggs containing sodium acid pyrophosophate, citric acid, monosodium phosphate, and nisin.

The folded eggs—the ones used in the McGriddle, bacon, egg and cheese biscuit, bagel sandwiches and more—are the least fresh. These are cooked from liquid eggs in factories, which are then flash-frozen and then warmed up to serve in restaurants.

That Egg McMuffin has never looked so good!