Prepare two highball glasses with ice and reserve
In the cup of a cocktail shaker, add the plum reduction, Cointreau, tequila, pomegranate cherry juice, and lime.
Next, add a generous handful of ice to your shaker and close the lid.
Shake vigorously for 30 seconds, or until the outside of the shaker becomes frosted.
Place a small fine mesh sieve over your serving glass and strain the drink into two glasses.
Top with soda water if desired. Garnish with a half round of plum or cocktail stirrer with blackberries.