5. Conclusion

Tea is an ancient beverage whose area of use has continued to expand, to the point where it is often considered the world's leading beverage after water. This development has encouraged non-traditional producer countries such as East Africa to enter the market, and significant gains in agricultural yields have been achieved. Around 2000, Asian countries also converted their green tea production to black tea to satisfy demand for cheap tea. In the 21st century in the West, the driving force behind growth in the tea market is often the plant's health benefits, with an advantage for green tea, but also the development of tea extracts for use in food supplements or cosmetics. Another driving force is the appeal of Far Eastern products. Even if the sensory characteristics of teas consumed in the West are often very different from those of teas consumed in Asia, one of the challenges for the tea...