The heatwave has had us all searching for ways to keep cool, so I put scientists' surprising hot coffee theory to the test against iced coffee - and one drink came out on top

As the UK braces itself for another heatwave Which? has shared a trick for keeping drinks cool in hot weather - and the science behind it is fascinating

The heatwave has had us all searching for ways to keep cool, so I put scientists' surprising hot coffee theory to the test against iced coffee - and one drink came out on top