Blackberry Lemonade - cooking recipe

Ingredients

3 1/2 pt. basket fresh blackberries or 1 (16 oz.) frozen blackberries, thawed
12 c. water
2 (12 oz.) cans frozen lemonade concentrate
3 Tbsp. or more sugar

Preparation

Puree berries in processor.
Strain through sieve, pressing on solids with back of spoon.
Transfer to large pitcher.
Add 12 cups water, lemonade concentrate and 3 tablespoons sugar, taste, and more sugar if desired.