Meaning of Kadhai deg in English. How does Cauldron look like

A large cast iron pot used for cooking or boiling over an open fire, Cauldron was used in earlier ages. It can be used to cook a variety of food for a large group of people. Cauldron is usually black in color given its constant acquaintance with fire. Most usually, cauldrons are seen in fantasy movies being used for cooking potents and herbs.