Pre ice your Lemon Aid by putting the dry leaves in a jug with the water and sitting in the fridge overnight
Bruise the lemongrass by pounding it with a rolling pin (or other heavy implement!) on a chopping board, then slice it lengthways in half and add it to the steeped tea along with the sliced ginger, lemon and lime
Add the Bacardi (or leave out if you're looking for an alcohol free version) and sweeten to taste with agave syrup