Muddle first 6 ingredients in a glass with back of a spoon or a muddler until the basil and lychees are crushed a bit . Say for 30 seconds .
Now top it with ice cubes.
Next pour in the lychee puree and some water .
Just before serving. Fill in the glass with sparkling water/ club soda.
Garnish it with more basil if required .
Stir well before drinking.
Refer above for simple syrup recipe . Lychee can be substituted with any seasonal juicy fruit. You can add maple syrup or honey too and skip the syrup. Just add more water. This recipe makes single serving. This recipe can easily be made in big batches. You can substitute basil with other herbs like fresh mint, rosemary or thyme. Adding salt is optional.