Make sure that you use foil containers correctly by following these simple guidelines. These are easy to remember once you understand the material, and how it performs in the microwave oven:

• Use only shallow foil containers, no more than 3cm deep. (Remember, microwave energy may not penetrate deeper than this).
• Where appropriate to the food dish, cover with a plate or microwave clingfilm. Do NOT cover with aluminium foil, or a foil-lined lid. (Remember, food completely encased in aluminium foil will receive NO microwave energy).
• Make sure the foil container does not touch any other metal (such as the sides, door or floor of the oven cavity, or any metal accessories provided by the manufacturer), to avoid arcing and possible damage to your oven. Always use containers one at a time, and place on an oven-proof glass plate.
• Increase cooking time by about 10%, to allow for the fact that energy is only being absorbed from one surface.
• Do not use bent or damaged foil containers, or re-use the containers in the microwave. Please wash and recycle them.
• All other standard microwave practice applies:
  • stir dishes as appropriate
  • leave to stand after re-heating
  • ensure food is piping hot before serving.

Sources: Hulamin Containers – www.hulamincontainers.co.za