What On Earth Is 'Ranch Dressing'?

[Telemark]

We did a thread on this fairly recently.

Why do some restaurants have "House sauce" instead of Ranch dressing?

I would complain (not to the waitress, just an “eww” only people sitting with me would hear, maybe) if it did taste like bottled ranch. I can’t stand any bottled ranches, but sometimes quite like ranch served at some restaurants.