The main difference between black tea and other types of tea lies in the degree of oxidation or fermentation. Black tea is fully oxidized, which means that the leaves are allowed to oxidize or ferment completely before being heated to stop the process. This oxidation process is what gives black tea its distinct dark color and robust flavor. In contrast, green tea is not oxidized at all, while oolong tea is partially oxidized, resulting in different flavors and colors.
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Last Updated: July 7, 2025
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