Make a pint of tea, I used Tetley Berry Burst Flavoured Green Tea. Leave to steep till strong. 
Add honey to taste and sprigs of mint. Leave the mint to infuse for a while. 

Double the liquid with a pint of cold water if you’re in a hurry to drink it immediately, but if you can make it ahead it’s better to leave the tea to cool and it will obviously be stronger. 

Add frozen raspberries, a few fresh sprigs of mint to decorate and lots of ice.

Of course you can always omit the raspberries and add whatever fruit you have to hand; such as slices of lemon, orange, lime or other fruit.
Enjoy!