The buns, the catsup, mustard, "special sauce", the onions, the pickles, the cheese, lettuce, and don't forget the sesame seeds! You could put a piece of cardboard in that McDonald's hamburger and not be able to tell the difference......

Whoppers have a ton of toppings. Lettuce, onion, tomato, mayo, ketchup, and I'm probably forgetting something. The only real taste from the meat is the grilling smoke.

I've had impossible burgers and while they are a bland they did a decent job on texture, so enough toppings make up for it just like with cheap beef.