Bahgol
Bahgol was a Klingon tea-like beverage, best served warm. 

Curzon Dax and Kang sat together over a glass of warm Bahgol at the Korvat colony when the Federation and the Klingon Empire were still enemies. In 2370, Jadzia Dax again offered warm Bahgol to Kang, Kor and Koloth, while attempting to convince Kang that she was really still the Dax he knew. ()

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Beverages
Klingonese