from the Grants (via the Torreses)
1 gallon water
6 Lipton tea bags (regular size bags or large, family-size bags for nice, strong tea)
1/2 - 1 cup sugar (I used 1 cup)
Bring 1 gallon of water to a furious boil. Remove from the heat.
Let the tea bags steep in the hot water for precisely 15 minutes. Remove the tea bags and mix 1/2 - 1 cup of sugar (add more to taste) into the hot tea. Stir until sugar is dissolved.
Refrigerate until cold. Serve over ice.