Raktajino

From Memory Alpha, the free Star Trek reference

Raktajino (pronounced rack-tə-jeen-oh) is Klingon coffee, served steamed or iced.

Raktajino wasn't known in Federation facilities such as Deep Space Station K-7 until sometime after 2268. (DS9: "Trials and Tribble-ations")

The beverage was eminently popular with the Starfleet members on Deep Space 9 in the 2370s, the senior staff in particular.

Benjamin Sisko started every morning off with a raktajino; in fact, he was not awake, much less did he talk to anyone until he had his first cup. Sisko also enjoyed drinking his raktajino with jacarine peel; this drink also went well with icoberry torte. During 2373, however, Benjamin was trying to cut back on his consumption of raktajino. (DS9: "Second Sight", "The Homecoming", "Children of Time")

Both Curzon and Jadzia Dax enjoyed raktajino, with Jadzia occasionally enjoying hers as a double raktajino, extra sweet or iced with extra cream. (DS9: "The Passenger")

While Ezri Tigan hated the beverage, once she was joined with the Dax symbiont she was unable to control the urge to drink it. (DS9: "You Are Cordially Invited", "Shadows and Symbols")

Raktajino has the properties to intoxicate Talarians. (DS9: "A Simple Investigation")

Tom Paris enjoyed raktajino with whipped cream on top; he considered ordering the beverage with his extra replicator rations. (VOY: "Meld")

During the Dominion occupation of Deep Space Nine of late 2373 to early 2374, Mavek brought Kira Nerys a raktajino every morning. (DS9: "Rocks and Shoals")