A clay pot is a cooking vessel made from unglazed, porous ceramic material, used across many cultures for slow, moist cooking. The porous clay absorbs moisture and distributes heat gently, which suits braising, stewing, and steaming rather than high-heat searing.
The best-known example is the Moroccan tagine, named after the vessel itself, which has a wide, shallow base and a conical lid that traps and recirculates steam over slow-cooked meat, vegetable, and spice combinations. Comparable vessels appear in other traditions too - the Indian handi, and various Mediterranean cazuelas and casserole dishes - each suited to that cuisine's own slow-cooked dishes.
Clay pots need seasoning and care: soaking before use and heating gradually helps prevent cracking, and most clay pots aren't suitable for high, direct heat.