I dislike sun tea, taste like old tea because it is after being left out in warm/hot for several hours. Bacteria is rampant in sun tea thus the old tea taste. I have sent many glasses of tea back at restaurants for the old taste. Many keep the tea in the maker over night. Not very smart. Fresh brewed tea has to be kept cold to keep. After room temp for several hours it's starting to turn. I use two pints of almost boiling water, add four family size tea bags, let steep for about 30 minutes, add water to make a gallon pitcher full, no sugar or sugar to taste. Put in fridge. At my house this lasts about a day and a half.