Recipe from Ina Garten, Food Network
4 tea bags
1 cup freshly squeezed lemon juice (5 to 6 lemons)
1/2 cup superfine (caster) sugar
3 lemon slices
Steep the tea bags in 4 cups of boiling water for 10 minutes. Discard the tea bags and allow the tea to cool.
Combine the lemon juice, sugar and 4 cups of cold water in a large pitcher. Add the tea and lemon slices. Serve over ice.