The diagram provides information about the steps needed to process tea leaves into different types of tea, specifically white tea, green tea, oolong tea, large-leaf black tea, and small-leaf black tea. In summary, the entire process comprises two main phases: the plucking and wilting stage, with the oven drying phase, which involves treating the tea leaves in multiple stages to make tea.
The first three stages are the same for producing all five types of tea. When the growth of tea leaves meets the standard, these grown leaves are plucked, and then left to a wilt phase. To produce white tea, the wilted leaves are then simply dried in an oven. However, in the production of green tea, the wilted leaves are then steamed and rolled, before being dried in the oven. The third type, oolong tea, is not steamed, followed by rolling and a slight fermentation stage.
For large leaf black tea and small leaf black tea, before both are fed into an installation that ferments fully, in comparison, the large types undergo the rolling phase, while the small types are crushed.