Dexam Faringdon Heavy Duty Heat Diffuser

Amazon

Designed for use with a gas ring to allow the even distribution of heat to prevent the burning of food. Recommended for use with pans and saucepans with a diameter up to 20cm. Stainless steel top with heat resistant hardwood handle. Care should be taken to keep the handle away from naked flames. Supplied with convenient leather hanging strap.

Harts of Stur

The Dexam 21cm Heat Diffuser is put directly on the hob and the pan is then placed on top, this allows the heat to be dispersed through the diffuser and allows the pan to simmer at a lower temperature than the stove can be tuned down to.