First, make blackberry ice by adding one blackberry to each space in an ice cube tray and then filling with water. Place in the freezer until frozen.
Prepare lemonade by mixing the concentrate with water in a pitcher.
Stir in 1 cup of blackberry juice and half of the remaining blackberries.
Chill until ready to serve.
To serve: add a hand full of blackberry ice cubes to a glass then fill the glass with Blackberry Lemonade. Garnish with a few extra blackberries on a toothpick.