Puree the mangoes in a blender or large food processor.
Fill pitcher 3/4 full with the filtered cold water.
Add cold brew family size tea bag to the cold water and steep as directed for 5 minutes.
Pour the tea into a blender, add the mango puree, lemon juice, 10 mint leaves, (NO STEMS) and light agave nectar.
Blend everything till smooth.
Fill glasses with ice, pour the mango tea over the ice, and garnish with lemon and mint.