Description Tear-resistant Heat-resistant Retains its shape Suitable for grilling, baking, roasting, wrapping and freezing Strength you can trust Warnings Do not allow foil to come into direct contact with a naked flame or electric elements. Do not allow foil to come into contact with acidic or salty foods. Salt or acid in food can occasionally attack aluminium and cause discolouration and small holes to appear. To prevent this from occurring, lightly coat the foil with cooking oil prior to cooking and storing. Not suitable for microwave use.