Don't boil any water. Simply insert your preferred tea bags (Earl Gray if you're feeling fancy) into a large bottle (preferably glass) with fresh water.

Leave the bottle outside in a spot with plenty of sunlight for anywhere between 5 hours and a day.

Add freshly cut lemon and/or peach slices and ice to taste.

If you're feeling in the mood, a splash of normal or sloe berry gin goes very well with the fruit and tea in the summertime.