Gadget of the week from Whittard, Westgate Centre, Oxford

In response to the increasing demand for cold brew coffee, Whittard of Chelsea have launched a new device to make cold brew tea at home. Like cold brewed coffee, cold brewed tea is brewed slowly over time to extract the flavours, producing a deliciously mild and rich taste with no hint of bitterness. The tea filter is easy to use. Spoon five to seven teaspoons (15g) of your chosen tea leaves into the glass bottle, fill up with cold water, put in the silicone filter stopper and refrigerate for three to six hours.

The tea filter costs £20.