for blueberry syrup
1 cup sugar
1 cup water
1 cup fresh blueberries
for drink assembly
1/4 cup blueberry syrup (for each drink)
2 ounces light rum (for each drink)
juice of 1 line for each glass
8 ounces club soda
Combine the sugar and water in a small saucepan over medium heat. Bring to a simmer then stir to dissolve all sugar. Remove from heat.
Carefully transfer sugar water to a blender and add fresh blueberries. Process until smooth but still slightly chunky. Remove and transfer to a glass jar or tupperware. Place in fridge and chill until cool. Blueberries will rise to the top and you can just skim them off when ready to use.
When you’re ready to make your drinks, place about two sprigs of mint in each glass. Squeeze a lime over top and muddle (mix around) with the bottom of a spoon. Then, add 1/4 cup blueberry syrup, 2 ounces of rum, and finish each glass with club soda.