The color of the brewed water from Tie Guan Yin tea varies depending on its quality. High-quality Tie Guan Yin should produce a golden yellow color when brewed. Conversely, Tie Guan Yin that is low-quality, such as those that are slightly astringent or sour, may produce greenish brews. Meanwhile, Tie Guan Yin that is charcoal-roasted and possesses a rich aroma produces a bright orange-red brew. Good quality Tie Guan Yin should have clear, transparent brews without any murkiness or impurities. Its flavor should be pure and free from any odd tastes or aromas.