In a saucepan, combine sliced peaches, 1 cup water, and ½ cup sugar. Bring to a gentle simmer over medium heat and cook for about 10 minutes, lightly mashing the peaches as they soften. Strain and let cool.
Bring 5 cups water to a gentle boil. Remove from heat and add tea bags. Steep for 5–7 minutes, depending on desired strength. Remove tea bags and stir in sugar while warm until dissolved.
Pour tea into a large pitcher and stir in the peach syrup and remaining 1 cup cold water. Taste and adjust sweetness if needed.
Refrigerate until cold. Serve over ice and garnish with peach slices, lemon slices, or fresh mint if desired.
Recipe Notes
Use ripe peaches for the sweetest flavor.
Frozen peaches work well when fresh peaches are out of season.
Add sparkling water before serving for a fizzy twist.
Store refrigerated for up to 3 days.