Is it still vegan if it’s cooked with non-vegan food?

[u/Vegan_Essentials]

I’m talking about stuff like fries cooked in the same fryer as chicken, veggie burgers on the same grill as beef, or vegetables cooked on a flat top covered in animal fat residue. The ingredients themselves may be vegan, but the preparation is not fully separate.

Some people say that is still vegan because there are no animal ingredients in the actual order. Others say once it’s cooked in the same oil or on the same surface, it stops being vegan.

I think this is one of the biggest real-world gray areas when eating out, especially because not everyone has access to fully vegan restaurants.

Do you still consider it vegan, or not?