Just in case there was a shred of doubt remaining, rest assured that Staten Islanders know their pizza. We went out to two local pizzerias with the intention to stump you with two seemingly similar but vastly different square pies: Grandma vs. Sicilian. Eaters at Metro Pizzeria in West Brighton and Nunzio's of Grant City gave us the run down on these two popular pies. (Watch the video above for their expert commentary.) Bottom line: If you don't know the difference, you are not worthy to eat it. 

For those who don't know, a Grandma slice is thinner with a stronger taste of garlic. Sicilian pizza is more of a deep-dish style -- bordering on focaccia -- with a sweeter sauce. Bon Appetit further explains the difference between these two pizza-fan favorites: "The dough in Sicilian pizza is left to rise a little between the time that it's stretched on the pan and put in the oven. This waiting time makes for a softer, fluffier final product. Grandma pie, on the other hand, is tossed in the oven quickly or immediately after it's been stretched onto the pan, which gives it a slightly denser and crispier crust."