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.
How long should you leave your teabag in? 25 seconds EXACTLY: Expert arrives at formula for perfect cuppa after drinking 400 brews in 48 hours. 1  Professional food and drink taster believes 25 seconds is perfect brew time. 2  Martin Isark, 59, drank 400 cups of tea in 48 hours to come to the conclusion.