Mortar and pestle sets are used to crush, grind, and mix small solids or slurries. The mortar has the shape of a small, heavy walled cup. The pestle looks like a miniature baseball bat, the end of which is used for crushing or grinding. Materials used to construct a mortar and pestle include ceramics, glass, porcelain, marble, stone, wood, and various metals. Ideal materials will be hard enough too crush the material effectively and malleable enough to avoid breakage during grinding. Mortars and pestles are commonly used to prepare food, powderize drugs and pharmaceuticals for faster absorption, and grind up various substances and chemicals to increase solubility.