01 -
Combine blackberries, water, and allulose in a saucepan.
02 -
Bring to a simmer and cook until blackberries soften and mixture thickens, about 15 minutes.
03 -
Strain mixture through a fine-mesh sieve to remove seeds, reserving the syrup.
04 -
In a glass, combine 30 ml of blackberry syrup with 120 ml sparkling water.
05 -
Top the soda with 60 ml heavy cream or coconut cream.
06 -
Garnish with fresh blackberries and mint leaves before serving.