(covers information from several alternate timelines)
Tea was a beverage which could be served hot or cold. It was made from plant leaves steeped in hot water. If served cold, the steeped water was then generally cooled down and poured over ice. Countless variations of tea were known on many planets.
Subcommander T'Pol was known to favor hot chamomile tea, although she occasionally drank mint tea as well. (ENT: "Fusion", "E²") Unlike her shipmates, however, T'Pol rarely drank tea to accompany a meal during her early years aboard Enterprise NX-01. By 2155, though, she had begun to incorporate iced tea into her meals with Archer. (ENT: "Babel One")
Captain Jean-Luc Picard was known for his fondness of Earl Grey tea, often ordering it from a replicator in his ready room with the phrase, "Tea, Earl Grey, hot." (Star Trek: The Next Generation) In an alternate timeline, Picard asked for Earl Grey tea from Data's maid using his usual phrase out of custom, to the amusement of Jessel. (TNG: "All Good Things...")
Before the attack by the Husnock warship, wild tea used to grow everywhere on Delta Rana IV. Rishon Uxbridge prepared tea from Delta Rana IV for the away team of the USS Enterprise-D. (TNG: "The Survivors")
Captain Kathryn Janeway preferred coffee over tea. She gave it up at some point after becoming an admiral in an alternate future and began drinking tea instead. She stated such to her past self after traveling back through time to change history, but after once again witnessing the USS Voyager crew's dedication, she again drank coffee, as she had decided to revive a few of her old habits. (VOY: "Endgame")
- See Types of tea