Add all the ingredients except the coconut water soda to a shaker with ice and shake.
Add the soda, then strain into a Collins glass.
Garnish with speared maraschino cherries and lime wheels.
*Cherry shrub: 3 parts marasca syrup (the syrup left in a jar of maraschino cherries) to 1 part Champagne vinegar.
**Coconut water soda: Fill an iSi container with coconut water, and charge with a nitrogen cartridge.