Kief

Kief, keef or kif (sometimes kef) refers to the resin glands (or trichomes) of cannabis which may accumulate in containers or be sifted from loose dry cannabis buds with a mesh screen or sieve. Kief contains a much higher concentration of psychoactive cannabinoids, such as THC, than other preparations of cannabis buds from which it is derived. Traditionally kief has been pressed into cakes as hashish for convenience in storage and shipping, but can be vaporized or smoked in its powder form.