This dish is special because...
The secret to this sandwich is the Maillard reaction paired with the high sugar content of the brioche. Because brioche is an enriched bread (made with plenty of butter and eggs), it toasts into a delicate, flaky crust that shatters when you bite into it. When the honey from the ham hits the heat, it slightly caramelizes, creating a sophisticated sweet-and-salty profile that cuts through the sharpness of the melted cheddar.