How to make the healthiest cup of tea
15 February 2012 Last updated at 08:00 GMT
Tea expert Dr Tim Bond explains how to make the healthiest cup of tea with the help of TV presenter Cherry Healey and the Women's Institute.
Brewing tea longer increases the level of antioxidants called flavonoids, also found in fruit and vegetables, which may help in the fight against heart disease and cancer by neutralising harmful chemicals in the blood.
Britain's Favourite Supermarket Foods will be broadcast on Wednesday 15 February at 20:00 GMT on BBC One or catch up later via the BBC iPlayer.