Well, that's one way, but the pierogies don't have to be potato ones.
This was over 50 years ago, so it's a bit hazy, but the gravy was probably
some brown sauce slop. I'm sure Windsor was a place where I had it too
considering my grandparents ran a restaurant/bar in Windsor.
I never understood the idea of "correctness" when it comes to these things
(except the idea of them being correctly cooked, of course) - mainly because
in the province just next door to where you were - where the idea came from,
there are variations that people can't agree on there either. It's like the
whole thing about what's "correct" when it comes to pizza toppings.
I'm sure someone will be horrified at the idea of my using paneer,
frozen pierogies and gravy in vegetable stock, but so what.
Also, it's definitely something you don't want if you're concerned
about your health. That's why stuff like that has long been out of my life.
I'd probably puke if it was put in front of me today.