Adanji
Adanji was a type of Klingon incense used only in the Mauk-to'Vor ritual. The incense had to be real and not replicated.

Worf obtained adanji from Quark to use in Kurn's Mauk-to'Vor, which alerted Jadzia Dax to what Worf was doing. ()

External link
 
Klingonese
Materials