<P> Earl Grey tea is a tea blend which has been flavoured with the addition of oil of bergamot . Bergamot is a variety of orange that is often grown in Italy and France . The rind's fragrant oil is added to black tea to give Earl Grey its signature pungent punch . Traditionally, Earl Grey was made from black teas, but tea companies have since begun to offer Earl Grey in other varieties as well, such as green or oolong . </P> <P> Tea flavoured with bergamot, which was used to imitate the more expensive types of Chinese tea, has been known in England since at least the 1820s . In 1837 there is a record of court proceedings against Brocksop & Co. who were found to have supplied tea "artificially scented, and, drugged with bergamot in this country ." A "Grey's Tea" is known from the 1850s, but the first known published references to an "Earl Grey" tea are advertisements by Charlton & Co. of Jermyn Street in London in the 1880s . </P>

What is the bergamot in earl grey tea
find me the text answering this question