you don't put the Worlds' Greatest Hamburger on the World's second greatest bun. Not if you want to remain the Worlds' Greatest Hamburger. Our sesame-topped buns are baked from scratch in our restaurant bakeries all day long. It's the only way to get that perfect combination of crisp crust and melt-in-your-mouth, fresh-from-the-oven taste. Not fresh from-a-truck taste like everyone else. Ah, there's nothing like that new bun scent.