Fill a glass with ice, then add:

2 leaves Thai basil, plus more for garnish
2 slices cucumber, plus more for garnish
2 ounces agave nectar or simple syrup
Juice of 2 limes
1 1/2 to 2 ounces silver tequila, such as Peligroso
Splash of ginger ale
Black pepper

Combine Thai basil and two slices of cucumber in a shaker and muddle with the agave nectar or simple syrup. Add the fresh lime juice and tequila with crystal clear ice. Shake vigorously and pour over the rocks. Finish with a splash of ginger ale. Garnish with a cucumber slice on the side with a sprig of basil. Throw just a small pinch of black pepper on top.