A Brass Cauldron is a cauldron made from brass, an alloy of copper and zinc. A Standard Size 2 Brass Cauldron is used to brew potions more efficiently than a Pewter Cauldron of same size. One could purchase a Standard Size 2 Brass Cauldron at Potage's Cauldron Shop, at a cost of twenty-one Galleons. Out of the three common varieties of cauldron — copper, brass and pewter — brass cauldrons brew at a medium speed.