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The diagram below shows two different processes for manufacturing black tea.
The provided diagram illustrates how black tea is manufactured in two different methods.
It is noticeable that the production of black tea consists of 5 steps, starting with tea leaves being collected and ending with processed tea leaves being dried.
In the first step, only buds and two top leaves are harvested to ensure the desired quality of tea. At the following stage, the leaves are placed on a rack so that the air can be passed through and remove 60% of their moisture.
After the leaves wither, they can be treated by using either traditional method or modern one. Regarding the traditional method, the tea leaves are rolled flat and broken to produce loose tea and enzymes are released from the leaves during this stage. The modern method, on the other hand, is employed to produce tea bags. This process is expected to be quicker and to produce smaller granular pieces as the leaves are cut, torn, and curled.
In the subsequent step, the leaves experience the oxidation or fermentation. During this step, rolled leaves are spread on flat surfaces such as tiles or cement, which allow enzymes to react with air. As a result, the color of the leaves changes to copper. Finally, the leaves are dried up in ovens or hot air dryers, causing a significant loss of moisture (97%). Also, flavor and aroma from the leaves are released.
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