If frozen, thaw completely the cod fillets, and dry them with paper towels

season with salt and set aside

Peel and quarter the potatoes, and cook in lightly salted water until tender

Meanwhile, fry the pepper in olive oil for 3-4 minutes

Add cubed sausage, saut for another 2-3 minutes

Add the whole plum tomatoes, halve them with a flat end of a wooden spoon

Stir in olives and parsley, cook the sauce gently for 2 minutes

Set aside

Drain the potatoes and season with parsley, olive oil and lemon juice

Use a hand masher to mix and mash

Leave in a warm place

Place the cod fillets into a hot oiled non-stick pan and cook over a high heat for 5 minutes on each side or until golden brown

Serve with mashed potatoes and sauce