White

White tea (白茶, Bái Chá, "White Tea") is defined not by its cooking process but rather by its lack of one. White tea is the only category of tea that is, by definition, raw. This means that it cannot be described in terms of oxidation, because it starts off unoxidized (like green tea) and slowly oxidizes over time. 

Sources: 

• https://westchinatea.com/tea/white-tea/