Oolong of steeping oolongs in Taiwan and China is called gongfucha. This method uses a small steeping vessel, such as a gaiwan or Yixing clay teapot, with more tea than usual for the amount of water used. Multiple short steeps of 20 seconds to 1 minute are performed; the tea is often served in one- to two-ounce tasting cups. Oolong generally contains caffeine, although the caffeine content in tea will vary based on terroir, when the leaf is plucked, and the production processes. Oolong Oolong (; ) is a traditional semi-oxidized Chinese tea ("Camellia sinensis)" produced through a process including withering
Black tea tea is a blend of two or more black teas of the leaves and buds of "Camellia sinensis" that contain at least 30 percent water-soluble extractive, with 4 to 7 percent ash. Unblended black tea contains at least 25 percent water-soluble extractive, with 4 to 7 percent ash. Packaging of black tea is based on the packaging guidelines from the country of origin. Generally, unblended black teas are named after the region in which they are produced. Often, different regions are known for producing teas with characteristic flavors. Black tea is often blended and mixed with various other plants in