Caldeirada is a well known Portuguese dish which, I seem to remember,
uses a lot of shellfish. Here is a Goan version.
Ingredients
10 large mackerel or sardines, cleaned and head removed
4 large onions, sliced
2 large tomatoes, sliced
1 head of garlic, finely sliced
1 inch piece of ginger, finely sliced
3 Tsp light oil
1 Tsp vinegar
1/4 tsp ground turmeric
4 bell peppers (red/green) and or green chilies
salt to taste
Method
Layer a few slices of onion and tomato in a pan. Place 1/2 the fish over onions and tomato.
Add another layer of onion/tomato and then another layer of fish. Sprinkle with the garlic and ginger.
Scatter over the remaining onion and tomato. Pour the oil, vinegar and about 6-7 Tsp water over the fish. add salt is desired.
Cook on a low heat until fish is half done. Sprinkle turmeric over fish. Add
peppers/chilies.
Cook until fish is tender.