Bring 750 ml water to the boil, allow to cool briefly. Add tea bags and let it brew for about 6 minutes. Remove the bag. Add sugar, heat while stirring until the sugar is dissolved. Bring to the boil and simmer for 6-8 minutes. Fill into a clean bottle (approx. 750 ml), close and let cool down
Wash the lemon, grate dry and cut into 6 slices. Wash lemon balm and dab dry, remove leaves. Put ice cubes into 6 glasses (approx. 350 ml content). Distribute lemon balm and 1 lemon slice in each glass. Pour 4 tbsp. jasmine tea syrup into each glass and fill up with 250 ml tonic water. Serve immediately. The rest of the syrup will keep in the fridge for at least 3 weeks
waiting time approx. 3 hours