Colander-type strainers are stamped or molded with a regular pattern of holes, which provide an exit for fats or liquids to drain away from solid foods. In typical usage, the colander stands on its own stubby feet as you pour your mixed liquids and solids through it. A few variations on the basic design are used rather differently. Some colander-type strainers are flat, and circular or semi-circular in shape. They're held to the lip of a pot as you pour, to let the liquids out and restrain the solids. Restaurants use a special conical colander, called a "china cap," that's held in one hand or rested across a pot as you pour.