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Why Is Reheated Pizza Crispier When Reheated on Parchment Paper?
Before answering questions about the relative merits of foil and parchment, we wanted to test different techniques for reheating pizza. We started by testing three methods: heating pizza on a preheated baking stone, on a baking sheet, and directly on the oven rack with a baking sheet underneath to catch drips. Although we expected the last method to deliver a crisp crust, it didn't; the crust was soft and this method was quite messy. The baking sheet did a good job, but the crust was even more crisp when slices were warmed on a hot baking stone.
Could we adjust our baking sheet method to yield better results? Brushing the crust with oil before reheating just made it tough. Lining the pan with foil made the crust less crisp, but, as you found, parchment paper made the crust more crisp. In fact, when reheated on a parchment-lined baking sheet, the pizza was just as crisp as that heated on a preheated baking stone.
Why does parchment, and not foil, promote crispness? Absorbent parchment paper likely wicks away any moisture on the crust that might otherwise cause sogginess; with foil, the moisture has nowhere to go. Our recommendation is to reheat pizza in a 400-degree oven for six minutes on a baking sheet lined with parchment paper.
4 hours ago




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