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.
Stick butter in the freezer and it can last up to 9 months longer. Photo from Flickr: Siona Karen. Once opened, half and half, and all other liquid creams, last about 5-7 days after their expiration date. Photo by Flickr: Greencolander. An open container of ground coffee will last 3 to 5 months past the best before date, whereas coffee beans will last up to 6 months. Photo from Flickr: EpSos.de. Dry pasta may seem to have an infinite shelf life. It doesn't, but it has quite a long one -- It'll last 1-2 years past the best before date.