Earl Grey tea is black tea flavoured with what?

Earl Grey tea is black tea flavoured with bergamot oil. Bergamot oil is derived from the peel of the bergamot orange, a citrus fruit. The oil adds a distinctive floral and slightly citrusy aroma and flavor to the tea, giving it a unique and refreshing taste. The combination of the bold and robust nature of black tea and the fragrant essence of bergamot oil creates the beloved and recognizable Earl Grey tea that is enjoyed by many.