1/2 ounce lime juice, freshly squeezed
1/2 ounce simple syrup
1 1/2 ounces tonic water or ginger ale
1 1/2 ounces seltzer water
3 dashes bitters
In a lowball glass filled with ice, add the lime juice and simple syrup. Stir to combine.
Slowly stir in the tonic water and seltzer water.
Top with the bitters and serve.