[A_D_E_P_T]

Burgers, shakes, pancakes, hot dogs, sometimes BLTs and tuna melts. That sort of thing. In Europe, the "American Diner" is usually the only place that'll serve a normal plate of pancakes. (Everywhere else it's crepes, which are completely different...)

[thaumasiotes]

Sounds pretty reasonable.

Within the US, there are at least two major diner chains:

https://www.dennys.com/

https://www.ihop.com/en

At a diner in America, I'd be unsurprised to see some less "diner" offerings. When I go to my local non-chain diner, I order fettucine alfredo. And the article here has a good picture of a diner advertising "American and Korean food". I think part of the core diner concept is a somewhat athematic menu that is meant to cater to local tastes.

With that in mind, Cheesecake Factory might also be thought of as a diner. https://www.thecheesecakefactory.com/menu

So I'm a little surprised at the idea of a diner that only has classic burgers / shakes / pancakes, but I'd have to admit those are fairly core dishes.

[xeromal]

I'd say a waffle house is a better chain if you're in the lower Southeast. Much closer to a true diner experience

[kulahan]

Yes, absolutely. They talk to you the way I expect to be talked to in a diner (lotsa “huns”), the coffee never ends, and sometimes you get to watch UFC live. The food is so easy to eat, too.

[andrew_lettuce]

Fried chicken, liver and onions, biscuits and gravy - the breakfast options are my jam, but not really the other entrees. You can order dessert regardless though!

[xeromal]

Do they serve hashbrowns?

[A_D_E_P_T]

Yes, in fact. I was at the one in Belgrade about a year ago, and their hashbrowns are terrific. It's mostly a burger and pancake joint, though.