pizza, reheat the pizza slices in a large skillet on medium heat for 4-5
reflect heat back to the toppings without trapping steam inside.
Chef John from Culinary blog Foodwishes
claims that the residual oil from the pizza crust in your skillet will
be reheated and make the crust crispy again and by the time this happens
the cheese will have melted again and warmed the toppings. He even
makes the claim that he uses this method with delivery pizza to improve
Magic Pizza Reheat Method! | YouTube