A fierce Klingon alcoholic drink that fumes in the cup, which Worf orders for the Bringloidi leader Danilo Odell in Up the Long Ladder.
Chech'tluth is a Klingon spirit strong enough to give off vapour as it is poured.
It appears in The Next Generation episode Up the Long Ladder, set in 2365. The Enterprise-D evacuates the Bringloidi, a colony of rustic farmers, and their leader Danilo Odell is unimpressed by the synthehol on offer from the ship's replicators. He asks whether there is anything with more of a kick. Worf, who has just been through a bout of a Klingon childhood illness, instructs the replicator to produce chech'tluth.
Odell takes one swallow, is staggered by it and decides that it will do very nicely. The scene is one of the first friendly exchanges between Worf and a guest, and an early glimpse of Klingon drinking habits.