In a medium sauce pan, combine 2 cups water and sugar and bring to a boil - stirring occasionally.
Remove from stove and allow to cool down.
Using a blender or food processor, puree 1 cup dewberries+ 2 tbs lemon juice.
In a large pitcher, combine water/sugar mixture and lemon juice.
Using a fine mesh strainer, pour dewberry puree into strainer and stir contents into pitcher.
Add additional 5 cups water and stir.
Serve with ice, fresh lemons, dewberries and a sprig of mint if desired. Enjoy!