Kief / Dry Sift

Have you ever broken up your weed in a grinder and noticed all the powdery dust like material at the bottom? Those are weed crystals (trichomes) and are referred to as kief or dry sift in the Canadian cannabis community. It is basically trichomes that have been removed from marijuana. Since kief is comprised mainly of the stuff that gets you high, kief is very potent and has a very high concentration of THC, making it much stronger than traditional marijuana.