Place lime juice and basil into your shaker and muddle the basil a few times until it is lightly bruised (see expert tips above for the best way to muddle basil).
Add the cucumber juice, non-alcoholic white wine and elderflower cordial or syrup to the shaker with a few cubs of ice. Replace the lid and shake for about 15 seconds.
Strain into your martini or coupe glass and garnish with extra basil and/or edible flowers.
