Earl Grey with a bit of heavy cream for hot tea. For iced tea, boil 1-1.5 gallons of water. When it hits a good rolling boil, take it off the heat and add two gallon-sized tea bags. Set a timer for six minutes. When it beeps, you'd best be removing the tea bags, or it'll be bitter as all hell. Allow to cool--don't add ice. If you've done it right, you'll have tea with about an inch of visibility, strong enough that when you add ice to your (cooled) tea, it won't dilute it excessively. Drink with lime, and don't pollute it with sugar.