Made this up.
3 sliced of cucumber
3+ leaves of fresh basil (spanked)
1 sugar cube
muddle the above in a mixing glass.
1 1/2 to 2 oz of your choice of bourbon
1/2 oz simple syrup
dry shake for 20 secs.
add ice, shake, double strain into a chilled cocktail glass
garnish with a spanked basil leaf.
note: for this one I added half an egg white which I think softened it a a bit too much.