01 -
Rinse fresh blueberries under cool water and pat dry.
02 -
Blend the blueberries and sugar-free blueberry syrup until smooth, then strain to remove seeds.
03 -
Stir heavy cream into the blueberry mixture until well combined.
04 -
Fill glasses with ice, pour in the blueberry mixture, and top with sparkling water.
05 -
Garnish with whole blueberries or mint leaves, if desired, and serve immediately.