From the longer Wikipedia page 
Baihao Yinzhen (simplified Chinese: 白毫银针; traditional Chinese: 白毫銀針), also known as White Hair Silver Needle, is a white tea produced in Fujian Province in China. Amongst white teas, this is the most expensive variety and the most prized, as only top buds (leaf shoots) are used to produce the tea. Genuine Silver Needles are made from cultivars of the Da Bai (Large White) tea tree family. It is important to point out that there are other productions that look similar with downy leaf shoots but most are green teas, and as green teas, they taste differently and have a different biochemical potency than the genuine white tea Silver Needle.
Tasting and brewingEdit
As with all white teas, it is best prepared with water below boiling (at around 75 to 80 degrees Celsius or 167 to 176 degrees Fahrenheit) and produces a slightly viscous glittering pale yellow color with evidence of floating white hairs that reflect light. The flavor and fragrance should be delicate, light, fresh, and sweet. Steeping should be longer than other white teas; up to 5 minutes per brew, and the volume of tea to be used can be higher. There are few parallels to be drawn as the taste is not similar to any other teas but Bai Mu Dan, except the latter is fuller but not as sweet and delicate.