Pour 200ml freshly boiled water into a glass jug and add the tea bags.
Add the fresh ginger and mint leaves.
Top up with freshly boiled water to bring the total volume to 800ml.
Add the natural sweetener (just start with a small amount and add more to taste).
Add the lemon or lime juice and stir well.
Allow to cool then transfer contents to a sterilized glass bottle and refrigerate.
Drink throughout the day.