Boil 5 cups of water then steep tea bags for 6 minutes. Discard bags.
In a saucepan combine sugar, ginger, 1/2 cup water and bring to a boil. Simmer for 5 minutes then pour mixture in with tea. Set aside to cool.
To serve, strain mixture to remove ginger and pour into a large pitcher. Top up with 2 cups cold water (or more to taste), and add peach nectar, peach slices, and mint.