J. Kenji Lopez-Alt, writing for Serious Eats:
Well here’s the deal: you can get your McDonald’s biscuit sandwiches (or any breakfast sandwich, for that matter) made with a 100% real egg, cracked and cooked fresh on-premises. All you’ve got to do is tell the cashier that you’d like your sandwich made with a “round egg” and they’ll replace your folded egg patty with a real egg, free of charge.
It’ll even appear on your receipt that way. The round eggs are the same ones they use on the Egg McMuffin, made from a real egg cooked on the flattop in a ring-shaped mold. The difference it makes for the sandwich is huge.
It’s so sad that you have to ask for real food at a restaurant. Way to go, fast food industry.