A mortar and pestle isn't a super common tool ... kief that collects in the bottom-most compartment of a standard weed grinder. Using this method results in a consistency similar to kief, compared ...

Mortars and pestles crush, grind, and mix small solids or slurries. The mortar is a small cup with thick walls, while the pestle is shaped like a small, heavy club, with the end used for either ...