Add all of the ingredients into a high speed blender and blend until smooth! Pour over ice in some fancy glasses and enjoy!
Add the frozen blackberries and water to a high speed blender. Blend until smooth.
Run the puree through a fine mesh strainer to get all the seeds out. I rinse my strainer through each pass through. It will take you a few times depending on how large your strainer is. Makes 4 cups of blackberry puree. Set aside.