In a cocktail shaker, muddle basil and strawberries. Add agave nectar, cachaça, and lemon juice. Add ice. Cover and shake vigorously for 20 to 30 seconds. Strain into an ice-filled old-fashioned glass; top with club soda. Garnish with a strawberry slice and basil, if desired.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/strawberry-basil-cocktail-recipe/