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.
3. Crack as many eggs as you wish into a freezer safe container (I used a tupperware-style plastic container with lid). Eggs cannot be frozen in the shell since they will expand and break. For this batch of eggs, I froze 2 cups of whole eggs per container. 4. GENTLY stir the yolks and whites together.
Embryos can remain on ice pretty much indefinitely; one baby was born after being frozen for 13 years. To get that kind of shelf-life, an embryo must be carefully sealed inside a tank filled with liquid nitrogen and monitored to keep it at least 31 degrees Fahrenheit below zero.