A solemn Klingon ritual in which two people share a tea that is toxic, meant as a test of courage and a reminder that death is an experience best shared.
The Klingon tea ceremony is a quiet, formal rite quite unlike the usual image of Klingon culture. The tea used is poisonous to Klingons and deadly to humans.
It appears in the Next Generation episode Up the Long Ladder. Worf collapses on the bridge with a childhood illness that he finds deeply embarrassing, and Dr Pulaski spares his pride by concealing the diagnosis. In gratitude he performs the tea ceremony for her in his quarters.
Pulaski insists on taking part properly and gives herself an antidote so that she can drink. Worf recites love poetry as the tea is served, and the scene is one of the few to show the two characters at ease with each other.