I didn't know "Pittsburgh pizza" was a thing. But I can certainly support this:
So what makes Pittsburgh pizza different? Firstly:
A Pittsburgh pizza is a vessel for cheese. . . .
But Pittsburgh pizza is primarily defined by cheese. Depending on the pizzeria, you will find somewhere between a lot and far too much cheese on your pie. I would call it a “toothsome” amount at minimum, and “an entire cheese shop’s worth” at maximum.