Tea Longjing green tea being infused in a gaiwan Type

Main article: Tea processing

Teas of different levels of oxidation (L to R): green, yellow, oolong, and black

Tea is generally divided into categories based on how it is processed.^[83] At least six different types are produced:

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  White: wilted and unoxidized;
  
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  Yellow: unwilted and unoxidized but allowed to yellow;
  
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  Green: unwilted and unoxidized;
  
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  Oolong: wilted, bruised, and partially oxidized;
  
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  Black: wilted, sometimes crushed, and fully oxidized (called 紅茶 [hóngchá], "red tea" in Chinese and other East Asian tea culture);