1) Hot water method: For 1 gallon of iced tea, bring half a gallon of filtered water to boil in a pot. Turn off heat, and add 3 tablespoons (1 oz of tea), let steep for 7 minutes. Strain the tea into the other half gallon of cool water and refrigerate. If you want to serve immediately, you can pour the concentrate over ice to cool and dilute, then pour over ice again.
2) Sun tea: use a glass container and add 1-2 tsp of loose tea of each cup of water directly into the jug. Then set in the sun for a few hours, tasting occasionally to get the desired strength.
3) Cold brew: The slow cold-water-steeping method extracts natural sweetness and flavor from the tea leaf. It lessens the bitterness and tangy-ness produced by tannic acid so your tea tastes smooth and mild. Add 1-2 tsp of tea per cup of cold water and put in the refrigerator. When the water is chilled, your tea will be ready!
