Tea

From Tardis Wiki, the free Doctor Who reference

Tea is both a plant grown on Earth and a drink made of the dried leaves of the plant submersed in hot water and allowed to brew. It originating in Asia. Before it spread to the west, the average English person, such as Will Chandler, who came from 1643, had it explained to him by the the Doctor as "a noxious infusion of oriental leaves containing a high percentage of toxic acid". The Doctor then professed that he rather liked it. (DW: The Awakening) It was later a favorite drink of the English and of the Doctor as well.

While in the black hole domain of Brimo, the the Doctor wrested part of the control away from Brimo by having one of her servants (which she had mentally created) serve him a cup of tea rather than kill him. (DWM: The Time Witch)

A potential future version of the Doctor met by his seventh incarnation had a particularly great interest in it. (DWM: Party Animals)

Minor references

Tea