Place the blueberries, sugar, and water into a saucepan and place over medium heat for about 30 minutes, stirring frequently.

Allow the fruit syrup to cool then transfer to a pouring cup or jug.

Pour the fruit syrup through a mesh sieve strainer, into a mason jar.

Smash the fruit with a spoon to release any juices remaining.

Squeeze the juice of one lime into the syrup and stir.

To make a blueberry lime mocktail, fill a glass with ice.

Add 2 ounces of blueberry lime syrup to the glass.

Top with your preference of carbonated water, club soda, or mineral water.

Garnish with a few blueberries and a slice of lime if desired.

Store any unused syrup in the refrigerator for up to 2 weeks.