Kief from Arabic (kayf), meaning ‘ pleasure, intoxication, sometimes transliterated as keef or kif, refers to the resinous trichomes of cannabis that may accumulate in containers or be sifted from loose, dry cannabis flower with a mesh screen or sieve. Using a three-chamber herb grinder the cannabis can be finely ground while letting kief crystals fall through a screen and collect into a small compartment. Kief contains a much higher concentration of psychoactive cannabinoids, such as THC, than that of the cannabis flowers from which it is derived. Traditionally, kief has been pressed into cakes of hashish for convenience in storage, but can be vaporized or smoked in either form. After the kief is collected it is heated and pressurized, which turns it into hashish. In Morocco, kif also refers to a traditional mix of finely-chopped marijuana and indigenous tobacco which is distinctly different from trichome powder and usually smoked in a long pipe called a sebsi.
Kief is strong, easy to collect and convenient to consume. A hit of kief can be quite powerful, since it usually tests around 50 percent while the purest extractions of kief can test up to 80 percent THC. Purchasing extraction equipment to make your own concentrates or paying retail prices in a dispensary for pre-made concentrates can be expensive.