Aluminium foil containers are available in all shapes and sizes to meet different food packing requirements.
  They are useful for food preparation, cooking, freezing, storage & heating.
  They are light in weight, easy to handle, store & transport.
  They can be sterilized and are suitable for use both in conventional and microwave cookers. As aluminium is impervious to moisture, gas, grease & sunlight, optimum freshness, flavour and aroma of contents is ensured, with no 'tainting' from the packaging. In other instances, where a barrier is required, perhaps because of the acidic nature of food, an internal protective coating can be applied.
  Most importantly, aluminium foil is endlessly recyclable, thereby drastically reducing energy needs in its manufacture and also conserving natural resources.

Aluminium Foil Containers in the Microwave:
1.Only use aluminium foil containers that are 3 cm deep (the microwave will not penetrate further down).  
 2.The containers must be filled to a maximum of 2.5 cm or there is a risk of burning.  
 3.Always remove aluminium foil cover or foil lined lid otherwise the dish will not be heated. The Cling Film may be used to cover the container. 
 4.The aluminium foil container must be placed at least 2 cm from the walls of the oven, or from another aluminium foil container or any other metal object in the microwave.  
 5.Increase recommended cooking & heating times by 10% as microwaves are only absorbed from above.  
 6.Don't use bent or damaged aluminium foil containers and don't reuse the containers in the