In a 4 quart saucepan, heat 4 cups water with sugar and lemon peel to boiling over high heat, stirring occasionally.
Cover saucepan and boil for 3 minutes.
Remove saucepan from heat and allow to cool slightly.
To Make Fruit Puree
Pulse berries in a food processor until pureed.
Pour berry puree into a medium mesh sieve over a large bowl and press with the back of a spoon to remove seeds. Discard seeds.
Remove lemon peel from syrup and stir syrup into berry mixture and add lemon juice, Blackberry GInger balsamic and remaining 4 cups of water. Makes 13 cups. Pour into a large pitcher with a tight lid and store in the refrigerator until cold at least 3 hours or store up to 2 days.
To serve
Place ice cubes in a tall glass. Fill glass 1/2-2/3 full with the berry lemonade mixture. Top glass with seltzer water or club soda to taste. This can also be enjoyed as an adult beverage by adding vodka.