What precautions are required with cooking containers and foils?
Plastic containers considered suitable for holding foods at room temperature may not necessarily be suitable for use in a microwave oven. The high cooking temperatures may cause the plastic’s chemistry to break down and thereby contaminate food in the container. Since it is difficult to determine the composition of plastic from its appearance, it is recommended that plastic containers or wraps not be used in a microwave oven unless clearly designated for such use by the manufacturer Research shows that ceramics, glass-ceramics, some plastics and papers are satisfactory. Dishes with metallic glazes should not be used. If fast food foil containers and aluminium foil are used, the oven manufacturer’s directions should be carefully followed. Do not let fast food foil containers or aluminium foil touch the sides of the oven as this may cause sparking.
