Witch and Caldron on Label.

A cauldron in general is a large metal pot or kettle for cooking and/or boiling over an open fire, with a large mouth and often with an arc-shaped hanger. Traditionally, it was made from cast iron, and rests on three legs. Although the cauldron has largely fallen out of use in the industrialized world as a cooking vessel, a more common association in Western culture is its use in witchcraft (witches traditionally prepare their potions in a cauldron)