A cup of iced tea on a hot summer day is very refreshing. You can make iced tea quickly by brewing hot tea, allowing it to cool, and serving it over ice. For a stronger, more refreshing iced tea, pour cold water into a pitcher with one tea bag or a tablespoon of loose tea in an infuser for every 16 ounces of water, then refrigerate it overnight before removing the tea leaves and serving the drink over ice.