Pour rum, lime juice, and agave syrup into the shaker. Fill with ice and shake well. Pour into a glass.
Top with club soda. Garnish with a basil leaf and a grapefruit wedge or slice.
Pour rum, lime juice, and agave syrup into the shaker. Fill with ice and shake well. Pour into a glass.
Top with club soda. Garnish with a basil leaf and a grapefruit wedge or slice.