Oolong

 was a type of tea. The Eighth Doctor picked up some oolong from Peking in either 1893 or 1983, before offering some to Mary Shelley. (AUDIO: Army of Death)

The Eleventh Doctor ordered two pots of the finest oolong tea at the Maldovarium and neglected to pay before he left, a fact that Dorium Maldovar did not forget. (AUDIO: The Light Keepers)