Between un-oxidized green teas and fully oxidized black teas there is a spectrum. This oxidation spectrum represents oolong teas. At one end of the spectrum, you will find oolongs that are more similar to green teas, whereas at the other end, there are oolongs that resemble black teas. Their beauty lies in their differences along this spectrum. Nantou Dark is a lightly oxidized oolong that is roasted (high fired). You can compare it to this other oolong I tasted here on the blog; they’re both oolongs but couldn’t be more different.