Cataplana is a Portuguese seafood dish, popular on the country's Algarve coast. It is also the name of the special cookware used to prepare the dish, which is traditionally made of copper and shaped like two clamshells hinged at one end and able to be sealed using a clamp on either side of the assembly.

When tightly sealed, the clams (littlenecks are preferable) are steam cooked to perfection and .....