A tablespoon is a non-scientific but very widely used unit of volume, which works very well in cooking, herbal medicine, etc. It is represented by a capacity of one tablespoon which varies from roughly 15 mL in the US to 20 mL in Australia.
1 If tea is properly stored, it can potentially last up to a year for green and black teas. White tea lasts about six months before it isn't as good in quality as when fresher. Stale tea (or bad tea) will taste flat, as if you're drinking paper.  Glass or ceramic containers are fine provided that they're opaque.
Place 2 tablespoons in a liter of water and bring to boil. Boil the leaves for 15 minutes or until the pot of water is half way gone. Remove the tea from the stove and stain the leaves off and drink the tea. You can store the left over tea in the refrigerator until needed.