Kief is also known as Dry Sift Hashish. Traditionally it was made with silk bags filled with dried cannabis and beaten repeatedly with a stick. These days it is either made by lightly sifting cannabis nuggets on a screen by hand or tumbling in screen cylinder. This separates the heads of the resin glands from the remaining plant material. It is a physical extraction as opposed to a chemical extraction. Solvent-less extracts it the common category this lovely extract falls into. It can be mixed with any other form of cannabis in a joint, smoked in a pipe, bowl or dab rig such as an electric nail. It is emerging as a popular Cannabis 2.0 product that is a great alternative to "flowers". Some people exclusively smoke kief and they have a vast collection of varieties for different occasions. A popular ways to enjoy kief is on the outside of a joint that has been dipped in resin and then dusted with kief.