Prepare tea according to package instructions in 200 ml water, chill for about 45 minutes. Peel and chop the mango. Wash lime hot, grate dry and cut in half. Cut 1/2 lime into slices.
Squeeze 1/2 lime. Mix tea, rum, lime juice and sugar. Pour tea, mango pieces, lime slices and some ice cubes into a glass. Decorate with lemon balm
Waiting time approx. 45 minutes