Plastic wrap should never be used in ovens, grills or other high-heat appliances because it can melt. Foods high in fat or sugar heat quickly, which can cause plastic wrap to melt or leach chemicals.

Foil is for baking, roasting and broiling, and parchment paper for cooking at 420°F and lower. Keep acidic foods and salt away from foil, as aluminum can leach into them. We use it to wrap ribs on the ...