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 lime, grate dry and cut into 6 slices. Put 3-4 tablespoons of jasmine tea syrup into 6 champagne glasses (each containing approx. 250 ml). Decorate glasses with slices of lime. Fill up each syrup with 200 ml Prosecco. Serve immediately. The rest of the syrup will keep in the fridge for at least 3 weeks
Waiting time approx. 3 hours