Product review (5 stars): Fox Run Heat Diffuser
An excellent replacement for a similar heat diffuser my wife has used for years on gas stoves. We could not obtain a diffuser in Australia so eventually sought one via Amazon.

The diffuser acts to reduce the direct heat on pots when cooking sensitive items such as soups and stews over gas. It aids simmering or slow cooking over gas.

On the basis of previous experience with the old one, the diffuser should be cleaned with a damp cloth only when cool and not put ocmpletely in water or it will tend to rust. The wooden handle also needs to be kept away from the flames as it could burn. These were the problems accumulating over the years that caused us to buy the new one.