The difference between green, oolong and black tea is the amount of fermentation each is allowed during processing. Fermentation oxidizes the leaves and changes their chemistry. Black tea is fully fermented. Leaves are withered then rolled to release the enzymes that cause fermentation. After careful monitoring, the tea is then fired or dried to stop the fermentation process.
Green tea is unfermented.
The first step in green tea processing is pan firing, where hot steam destroys the enzymes that cause fermentation. Back to top 7400 Gulf Blvd.