Peel gingerroot and cut crosswise into thin slices. In a medium saucepan boil water, gingerroot, honey, sugar, and zest, stirring, until sugar dissolves.
Remove pan from heat and steep "tea" covered, 45 minutes. Uncover tea and cool completely.
Remove gingerroot and zest with a slotted spoon and discard. Transfer tea to a pitcher and stir in lemon juice. (Chill tea, covered, until cold and up to 2 days.)
Serve tea over ice in tall glasses and garnish with lemon slices.
Recipe makes about 7 cups Iced Lemon Ginger Tea.
See also:
Lemon Tea Slush
Lemon Ice