Put the fish and prawns in a large bowl with the herbs, garlic, spices, salt and pepper and vinegar. Cover with clingfilm and refrigerate for 1 hour.
Melt the butter in a heavy-based casserole, add the oil, and cook the fish and prawns until the flesh begins to flake. Stir in the soaked noodles and cook for 10 minutes over low heat.
Preheat the oven to 180°C (350°F), Gas Mark 4.
Prepare the pastilla following the steps on
Transfer to the oven and bake for 30 minutes.