So this drink is appropriated from a friend who I think appropriated it from an *actual* recipe. Like other recent posts on this blog, I made this a few months ago...so the memory is hazy, but let's go with:
Juice some lemons
Make some sugar syrup
Get some basil
Have some ice handy
Oh and gin...
Muddle the basil with equal proportions of lemon juice, gin and about half the same proportion of sugar syrup. And by muddle I mean beat the crap out of it with the end of a wooden rolling pin - like you were smashing something in a mortar and pestle.
Strain into a glass with ice and top with a splash of soda.