Boil about a quart of water, remove from heat, add 6 regular-sized tea bags (I like Luzianne best; Lipton is good too), steep for 5 minutes, remove bags, pour into a half-gallon pitcher, add 2/3 cup of sugar, stir well, top up with cold water to make 1.75 quarts. Pour over 1/2 teaspoon or so of fresh lemon juice and ice.
-Don't squeeze the tea bags
-Don't add the tea bags until the water is removed from heat
-For stronger or weaker tea, either use more or less tea bags or add more or less cold water rather than varying steep time