01 - In a medium saucepan, bring 4 cups of water to a boil.
02 - Remove from heat and add tea bags. Let steep for 10 minutes.
03 - Remove tea bags without squeezing them. Stir in sugar until fully dissolved while tea is still warm.
04 - Pour sweetened tea into a large pitcher. Add 4 cups of cold water and stir well.
05 - Let cool to room temperature, then refrigerate until chilled (at least 30 minutes).
06 - Serve over plenty of ice. Garnish with lemon slices or mint if desired.