Earl Grey tea is one of the most recognized flavoured teas in the world. This quintessentially British tea is typically a black tea base flavoured with oil from the rind of bergamot orange, a citrus fruit with the appearance and flavour somewhere between an orange and a lemon with a little grapefruit and lime thrown in. Earl Grey is one of the most recognized flavoured teas in the world. This quintessentially British tea is typically a black tea base flavoured with oil from the rind of bergamot orange, a citrus fruit with the appearance and flavour somewhere between an orange and a lemon with a little grapefruit and lime thrown in.