Fill a large glass jar with water. Grab and place two family-size tea bags in the water in order to make a gallon of tea and place the jar out in the sun for a few hours. Then add some sugar, perhaps 1/3 cup of sugar should be enough. And then add eight packets of sweetener into the tea. If you do not use artificial sweetener, a cup of sugar is enough for a gallon of sweet tea. Brewing it in the sun doesn't release acids like boiling does, and it make the tea really smooth.
Enjoy!