茶 茶 茶
Here is his answer:
"Yun" 韻 by itself means many cool things. For instance as a verb it can mean to rhyme. As a noun it can mean a musical note. But in the case of tea it means "to linger" or a lingering flavor. Or, if you like a poetic sense, a lingering note. It is usually tied to the throat (喉韻) (Hou Yun). So it is the note that lingers in the throat.
Please realize that even in Taiwan people argue about whether Hui Gan (回甘) (returning sweetness) and Hou Yun (喉韻) are the same thing or not. Some people even say that, due to physiology, there can be no flavor that lingers in the throat. But geeks like that miss the point that, no matter where our sense receptors are, we nonetheless can have a perceived experience of a note or feeling lingering in our throats. It may even seem sweet to us. It reminds me of yoga and qigong. Whether or not anyone can measure qi is beside the point. If you do the practice, you will have an experience that feels like energy flowing. When you can cultivate this experience, health improves. Who cares if the experience is caused by a thing called qi or if the sensation is just the body's way of saying, "That's it, you've got it."
In any case, despite all the expert opinions on the "real" meaning of these tea terms, with the subjectivity of taste, as opposed to the more repeatable experience of vision, true agreement will always be out of reach.
茶 茶 茶
I thought that was such a great reply and I'm grateful that he gave me the thumbs up to share it on my tea blog. Xiexie Rob!