Kor'tova candle
Kor'tova candles
Kor'tova candles were ceremonial Klingon candles.
A lit kor'tova candle represented the fire that burned in a Klingon warrior's heart.
Before the age of thirteen, a Klingon child had to light his or her own kor'tova candle from the candle of another Klingon, thereby declaring his or her intention to become a warrior. If the young Klingon did not participate in the rite before turning thirteen, he or she would never be able to become a true Klingon warrior, though Worf did his at 15. (TNG: "Firstborn")
The lighting of the candles was, according to the Star Trek Encyclopedia, 4th ed., vol. 1, p. 437, a part of the First Rite of Ascension.