The first thing that you need to know about tea is that all tea comes from the same plant. The difference between the different types of tea have to do with how the leaves are processed.
So why the different varieties? Well, it has to do with the amount of oxygen the leaves absorb during the processing. A lot of oxygen produces dark-leaved black teas, while less oxygen is what gives green tea leaves their color. Tea leaves that are not processed at all are what white tea is made of. more info about tea »