Cover the pitcher and refrigerate. Steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.
For the best flavor, if you're using tea bags, snip off the corners and dump the loose tea into your pitcher. Or, just put the whole bags in the pitcher for tea that is *almost* as awesome and way easier to make. Pour in room temperature or cold water.