Amêijoas na Cataplana

The delicious little clams known as amêijoas are a feature of almost every menu in Portugal; and are also used liberally to garnish other seafood dishes. The special utensil used for cooking them, the cataplana, may be of copper or aluminium. What is important is the tight seal effected by the clasps.

Here is a recipe which shows how to use the cataplana.