It’s either gonna be the best food you eat or the absolute worst. No in between
And it differs by dish, not restaurant.
My personal “See Also” section to this is the casse-croûte, which doesn’t have an article on English Wikipedia*. It’s a common fixture of fast food in the French-speaking parts of Canada. It’s basically a tiny fast food restaurant, typically with room only for the kitchen and it serves customers out a window or tiny counter or similar.
I don’t know how much it impacts the narrative, but for many decades, street food was illegal in Montreal. It was only legalized in the 10s. The casse-croûte was a cheap way to have what are basically permanent food trucks in the city of Montreal, and it’s still common today across francophone Canada, in cities and by the highway.
Bonus “See Also”: the history and origins of the diner restaurant. It’s pretty interesting.
* Maybe it should.
I tend to order the patty melt as my initial measure of the quality of a greasy spoon joint
Two eggs over medium, burnt hashbrowns, rye toast.
It seems simple. It often isn’t.
For lunch my go to is open faced turkey with gravy. Breakfast is a Denver omelet and wheat toast