
In a cocktail mixer, place the lime wedges and muddle to release the juices. Make sure they are muddled very well.
Add the lychee (fresh or canned), if using, and muddle the lychee along with the lime.
Pour in the lychee syrup and the non-alcoholic gin, and stir to mix.
Add a generous amount of ice, and either stir or shake the cocktail to mix the ingredients.
Using a strainer, strain the mixture into a lowball glass. Add ice if you like.
Top up with soda or tonic (for a twist on gin and tonic). Garnish with lime wedges or slices, and lychee. Serve.