Bring 4 cups of the water to boil in a medium saucepan. Remove from heat, add black tea, cover and steep for 5 min. Strain and set tea liquid aside to cool. Add remaining 2 cups water and berries to a small saucepan and bring to a boil, then reduce heat and simmer for 5 min. Remove from heat and allow to cool for a few min. Add simmered berries to a blender and puree until smooth. Strain berry puree through a sieve to remove seeds and set aside. When tea and berry puree are both cool, combine them in a pitcher and add syrup and lemon juice. Set the mixture in the refrigerator to chill until ready to serve.
Serve over ice with slices of lemon and fresh berries. This recipe also works with our Hibiscus-Lavender Simple Syrup.