Prepare yourself with a jug capable of holding about 2 pints or 1 liter of tea. It is also helpful to have a fine mesh container that will fit into the jug or bottle to make for easy removal of leaves when brewing should stop.If you do not have the necessary fine mesh container then you will need a tea strainer and second bottle to decant your tea into in order to store.
Place 1 tablespoon of loose tea leaves and about 1 dessertspoon of dried stevia leaves into the fine mesh container. Place mesh container into the jug or bottle (or loose leaves if not using a mesh container).
Top up with cold water and refrigerate for about 8-10 hours or overnight.
If you intend to brew at room temperature then use room temperature water and brew for about 5-6 hours.
Video
How to Make Cold Brewed Tea - Jasmine Green Tea Easy Cold Brew
Brewing times depend on how much tea you use and the temperature of the water used as well as the temperature of the environment in which the tea will be left to steep. If not using green tea then brew times or quantity of tea used will need a little adjustment - longer for weaker teas like White Tea and shorter for stronger teas like Black Tea.For best results use a consistent type of tea and experiment with timings and quantity because each person will have a definite preferred strength. Use the quantities and timings given and adjust.If using tea bags you will find residue from the tea in the bottom of the brew because of the poor quality tea used for tea bags. In this case strain off the tea into a seperate container leaving these behind as you do so. If you leave this dust in the bottle you will end up tipping them into the last glass. Not optimal!