How to Make It
Pour 5 cups boiling water over tea bags; add mint sprigs. Cover and steep 5 minutes. Stir in sugar; steep 5 more minutes.
Remove tea bags. Pour tea through a fine wire-mesh strainer into a pitcher, discarding mint sprigs. Stir in concentrates and 6 3/4 cups water. Chill. Serve over ice. Garnish, if desired.