Earl Grey tea is a tea blend which has been flavoured with the addition of oil of bergamot. The rind's fragrant oil is added to black tea to give Earl Grey its unique taste. Traditionally, Earl Grey was made from black teas such as China keemun and therefore intended to be drunk without milk. However, tea companies have since begun to offer Earl Grey based upon stronger teas such as Ceylons which are better suited to the addition of milk or cream. Other varieties have been introduced as well, such as green or oolong.