August 13, 2007. 1  How to Determine Maturity of U.S. Savings Bonds. 2  Check to see what type of U.S. savings bond you have, in order to determine whether it has stopped earning interest. 3  Discover the time your bond reaches maturity, and when it stops earning interest, as these times can be divergent. For example, many bonds mature in 17 years, but may continue to accrue interest for 30 years or more.
Oolong tea is a product made from the leaves, buds, and stems of the Camellia sinensis plant. This is the same plant that is also used to make black tea and green tea. The difference is in the processing. Oolong tea is partially fermented, black tea is fully fermented, and green tea is unfermented. Oolong tea is used to sharpen thinking skills and improve mental alertness. It is also used to prevent cancer, tooth decay, osteoporosis, and heart disease.
How to Brew Oolong Tea. The best temperature for brewing oolong tea depends on how you're preparing it. Gong fu brewing usually requires higher brew temperatures (as well as more leaves and very short brew times) compared to Western-style brewing. For Western-style brewing, oolong tea is generally best when brewed between 190 to 200 degrees Fahrenheit (88 to 93 degrees Celsius). If you're looking at a pot of water in this temperature range, it will have bubbles that are about 5 mm in size and a moderate amount of steam. How to Brew Black Tea