Green tea and black tea are both made from the Camellia sinensis plant, but the differences in processing result in different flavor and health properties.

Green tea is produced unfermented, meaning the leaves are steamed or roasted immediately after harvest to kill the enzymes responsible for fermentation. This allows the leaves to retain their natural green color and antioxidant properties. Black tea, on the other hand, is fully fermented, meaning the leaves are stored in humid conditions for several hours to days to allow fermentation. This changes the color and taste of the leaves.

Another difference between the two types of tea is their caffeine content. Green tea typically contains less caffeine than black tea, making it a better option for those who are sensitive to caffeine. Green tea also contains a number of antioxidants such as epigallocatechin-3-gallate (EGCG), which give it its health benefits.

Black tea, on the other hand, contains more theaflavins and thearubigins, which have antioxidant properties and can also help regulate blood sugar levels. Black tea is also a good source of manganese, a mineral important for bone health.

Ultimately, the choice between green and black tea comes down to personal preference. Both types of tea have their own unique taste and health properties. However, if you prefer a tea with higher levels of antioxidants and less caffeine, green tea might be a better choice.