Mackerel Casserole - cooking recipe

Ingredients

4 mackerel
1 oz. butter
1 head celery, finely chopped
3 leeks, chopped
2 tomatoes, sliced
1 dessert spoonful tomato puree
5 oz. sherry
paprika, salt and pepper

Preparation

Ask fishmonger to remove the head and backbone from the fish. Sprinkle mackerel with salt and pepper and grill on both sides for a few minutes.
Put butter in a saucepan; add vegetables and cook for about 5 minutes, stirring frequently.
Add tomato puree, sherry, pepper and salt.
Arrange vegetables in casserole and put mackerel on top.
Sprinkle each fish with paprika.
Cover with lid and cook in gas oven on gas mark 4 (350\u00b0) for about 15 minutes.