By appointment to her Majesty Queen Elizabeth II Tea and Coffee Merchants R. Twining & Co. Ltd. For Centuries people have enjoyed tea, or Camellia sinensis, as an invigorating and refreshing beverage. Today the natural, healthful properties of tea are being rediscovered. Black tea, such as the tea contained in this package, and green tea naturally contain flavonoid antioxidants, which may help protect the body from the damage caused by harmful free radicals.