(from Latin 'caldarium', hot bath) is a large metal-made pot for cooking and/or boiling over an open fire, usually attached to a hanger with the shape of an arc. In legend, a cauldron is usually where leprechauns
keep their treasure, and also where witches
prepare their potions
, most notably the weird sisters in the play Macbeth
. As a cooking vessel it is mostly obsolete. It is believed that a predecessor of the Holy Grail
myth was a cauldron.