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.
A lesser-known type of tea, oolong tea is made from the leaves of the Camellia sinensis plant, the same plant used to make black and green tea. Unlike black tea, which is oxidized until the leaves turn a deep black color, oolong tea is partially oxidized. The Benefits of Oolong Tea.