Pestle & Mortar

Pestle & Mortar are implements used since ancient times to prepare ingredients or substances by crushing and grinding them into a fine paste or powder in the kitchen, laboratory, and pharmacy.
The mortar is a bowl, typically made of hard wood, metal, ceramic, or hard stone, such as granite. The pestle also is a heavy and blunt club-shaped object.
The substance to be ground, which may be wet or dry, is placed in the mortar, where the pestle is pressed and rotated onto it until the desired texture is achieved.
Application
Medicine
They were traditionally used in pharmacies to crush various ingredients prior to preparing an extemporaneous prescription. The mortar and pestle, with the Rod of Asclepius, the Green Cross, and others, is one of the most pervasive symbols of pharmacology, along with the show globe.
For pharmaceutical use, the mortar and the head of the pestle are usually made of porcelain, while the handle of the pestle is made of wood.
Mortars and pestles are also used as drug paraphernalia to grind up pills to speed up absorption when they are ingested, or in preparation for insufflation. To finely ground drugs, not available in liquid dosage form is used also if patients need artificial nutrition such as parenteral nutrition or by nasogastric tube.