Pan.

Pan pizza is the style everyone’s eaten and nobody defines. In Chicago it means something specific: a thick, chewy, bready crust baked in a seasoned steel pan — deeper than a tavern pie, lighter than a deep dish, and at its best wearing the single greatest edge in pizza: the caramelized crust.

The halo

In 1971, in suburban Morton Grove, Pequod’s started running mozzarella up the inside wall of the pan before the bake. The cheese against hot steel doesn’t melt — it fries, forming a dark, crisp, almost-burnt ring around the entire pie. The menu calls it caramelized crust. The crew calls it the halo. It looks like a mistake and eats like a revelation: bitter-edged, salty, crackling against the soft crumb underneath. Half the “pan pizzas” in America now imitate it; Detroit style built a whole identity on the same chemistry (frico, if you want the technical term). The original ring is still in Morton Grove, and yes, the pilgrimage is worth it.

The family tree

Pan is less a single style than a Chicago-area family of thick pies that aren’t deep dish:

• The caramelized school — Pequod’s and its descendants. The halo is the point.
• The lighter-than-deep-dish school — Connie’s pan pie: breadier and airier than its deep-dish sibling, the version that feeds ballparks.
• The house-style school — The Silo in Lake Bluff, baking in deep, seasoned pans since 1968; Salerno’s thick, chewy “Salerno’s style,” a Grand Avenue legacy that’s not quite deep dish and proud of it; Freddy’s of Cicero square “pizza bread,” a deli counter institution.

What unites them: dough with real chew, a pan-fried bottom, structure that holds toppings without the fork-and-knife ceremony of deep dish.

How to spot a real one

• The bottom: golden and fried-crisp from oiled steel, never pale.
• The crumb: open and bready, like good focaccia. If it’s dense and biscuit-short, you’ve wandered into deep-dish territory.
• The edge: ideally caramelized — cheese fused to crust in a dark ring. Once you’ve had it, a naked rim feels like a missed opportunity.
• The weight: substantial but liftable. A pan slice holds in one hand. Deep dish requires negotiation.

Pan vs. deep dish vs. Detroit

Deep dish is a short, buttery crust with the filling layered upside down; pan is bread-built, right-side up. Detroit is pan’s rectangular Midwest cousin — same frico edge idea, square steel pans, sauce striped on top. If the pie is round, chewy, and the edge crunches like a cheese cracker, you’re in Chicago pan country. Welcome. It’s a good place to be.