Ingredient:

• ¾ pound cod
• ½ pound prawns
• 1 onion, quartered
• 1 carrot, chopped
• 1 stalk celery, chopped
• salt and ground black pepper to taste
• water to cover
• 6 tablespoons extra-virgin olive oil
• ½ small onion, sliced
• 1 red chile pepper, chopped
• 1 clove garlic, minced
• ½ cup dry white wine
• ½ pound tomatoes, chopped
• ½ pound clams in shell, cleaned
• ½ pound mussels, cleaned and debearded
• 4 slices bread, or more to taste
• 1 clove garlic, halved
• 1 bunch fresh parsley, chopped