However, decorative karuwas are made from precious metals such as silver and gold.
[2] Karuwas have a curved body and a neck to pour liquid, like a kettle.
To allow smooth pouring when locked, a small hole is also made in the cap to balance air pressure.
In Newari culture, karuwa is worshipped on the day of Mha Puja, alongside other household utensils and appliances.
[1] The same district also have built the world's largest portable karuwa, which is cast in bronze and weighs 150 kg.