Here, for a while at McDonald’s there was a 🍔 called “the 1955” and it was the best, big pieces of onion, an special sauce, buns and big piece of beef with bacon (for Europe standards anyways) it disappeared once and came back for an encore only to be removed again and never return.
Burger King had actual Mac&Cheese burger patties for a very brief period and it was the best thing ever.
SmashBurger did the same and also had a spicy version that was awesome; also gone 😔