The clue is in the name. It’s from Yorkshire. Even The U S English spell checker capitalises it.
Just like the Brits, it is flexible and can be sweet or savoury.
If you bothered reading the thread before replying you would know this.
A pie can also be sweet or savoury and it has a lid. That’s my definition. Wait and see how many agree with it before you decide.
Pizza does not qualify as a pie. No lid no pie. Everything else is a flan. Good old fashioned English word that.