There are certainly non-fast-food restaurants that sell burgers.
To give a random example that comes to mind: the burger is one of the most iconic/famous things on the menu at the Spotted Pig, which has a Michelin star. You can't really compare it to McDonald's any more than you could compare any other dish to the fast food version.
To give a random example that comes to mind: the burger is one of the most iconic/famous things on the menu at the Spotted Pig, which has a Michelin star. You can't really compare it to McDonald's any more than you could compare any other dish to the fast food version.