Iron Goddess of Mercy (often transliterated as Ti Kuan Yin or Tie Guanyin) is your standard oolong. Art of Tea‘s Green Iron Goddess of Mercy is a full-leaf loose tea. They also offer a ‘roasted’ variety with higher oxidation, which I am very interested in trying.
This is one of my favorite teas that I have in the house. It has a medium flavor strength, crisp with a hint of sharpness, that is definitely in the woodsy flavor family (but not smoky!). The tea slowly unfurls over repeated steepings, and looks good on display in an open-topped infusing basket. With a medium-size spoonful, I can resteep for 4-8 (large) cups.