To make a liter of strong iced tea.

4 Rooibos tea bags / liter of water
about 5 cm piece of ginger, peeled and finely sliced
peel from 1 lemon
small handful of mint leaves
2 T of honey (or sweetener of your choice, I also like to use artificial sweetener)
juice of one lemon
extra slices of lemon and mint to serve (optional)
Fill a heat proof jug with boiling water and add the tea bags. While it is hot, add all the ingredients except the lemon juice and hte honey, and allow it to infuse. I normally leave it in until the water is luke warm and then I remove the tea bags. Stir through the honey and add the lemon juice. Store in the fridge until you are ready to use it.

If you leave the mint, lemon rind and ginger in the tea, the flavour will strengthen. If you want to keep it quite mild, strain it out when you remove the tea bags. Either way works well. You can also muddle the aromatics slightly in the tea, bruising the ginger, mint and lemon, to further release their delicious oils.