Magazine F #25 TeaFor thousands of years, tea has been an important drink across the world, reflecting the regional and cultural trends of different eras. A cup of tea is produced by brewing tea leaves, also known by its scientific name Camellia sinensis, and by strict definition, the category is limited to green tea, white tea, yellow tea, blue tea, and black tea. In general, tea refers to a wider range of variations such as herb tea, flavored tea, and even iced tea.