Gunpowder tea is a form of green Chinese tea produced in Zhejiang Province of China in which each leaf has been rolled into a small round pellet. It is believed to take its English name from the fact that the tea resembles grains of black powder. This rolling method of shaping tea is most often applied either to driedgreen tea (the most commonly encountered variety outside China) or Oolong tea.
While brewing methods vary widely by tea and individual preferences, 1 teaspoon of looseleaf tea is recommended for every 150ml (5.07 oz) of water. Ideal water temperature for this type of tea is between 70 °C (158 °F) to 80 °C (176 °F). For the first and second brewing, leaves should be steeped for around one minute. It is also recommended that the tea cup or tea pot used should be rinsed with hot water prior to brewing the tea to warm the vessels. When brewed, gunpowder tea is a yellow color.
The flavor of brewed gunpowder tea is often described as thick and strong like a soft honey, but with a smokey flavor and an aftertaste that is slightly coppery. This type of tea is often seen as having a flavor that is somewhat grassy, minty, or peppery.
Taken from Wikipedia.