Oolong is a traditional Chinese tea that varies greatly in taste depending on the type. They're considered to be half-way between a black and a green, having the full flavor of a black and the smooth warmth of a green. Some oolongs are blacker than others, such as our Wuyi Oolong, while others are greener, such as our Coconut Oolong. The Iron Goddess is in the middle of the scale and functions as a good basic oolong. Their caffeine content varies greatly depending on how black or green the tea is.