Trakian ale was a type of alcoholic beverage.
Trakian ale was served in cafes on Farius Prime in the early 24th century. (ST - The Lost Era novel: Well of Souls)
In 2370, Ensign Sam Lavelle ordered a Trakian ale in Ten-Forward after learning Commander Will Riker was having the same. (TNG episode: "Lower Decks")
Steth, while possessing Tom Paris's body, sampled Trakian ale along with other varieties of alcohol. (VOY episode: "Vis à Vis")