Since its opening four years ago, iconic London-based tapas bar Barrafina has become famous for its classic, nononsense offerings. This dish, taken from the restaurant’s recently published cookbook, fuses cod with mojama – a type of air-dried tuna available in good delis and supermarkets.

Preparation time

15 minutes

Cooking time

1 hour

Ingredients (serves 4)

240g brown lentils
1 onion, peeled and halved
8 bay leaves
1 bulb of fennel, cut into quarters
1/2 bulb of fennel, finely chopped
A small bulb of thyme, stalks tied together
100ml olive oil
4 fillets of cod, skin on
Salt and pepper
2 large shallots, peeled and diced
5 tablespoons moscatel vinegar
20 fresh mint leaves
50g mojama tuna, very thinly sliced

Method

Step 1: Put the lentils, onion, bay leaves, quartered fennel and thyme into a pan and add 4 litres of water. Bring to boil then reduce for 45 minutes. Drain the lentils, then discard the onion, fennel, thyme and bay leaves.

Step 2: Heat 50ml of olive oil in a pan, add the cod fillets, skin side down. Season with salt and pepper and cook for 5 minutes. Turn over, season again and cook for another 5 minutes.

Step 3: While the cod is cooking, heat some oil in another pan, add shallots and the finely chopped fennel and cook for 3 minutes. Add lentils and heat through, then remove from the heat and stir in 25ml of olive oil and muscatel vinegar. Add mint and season.

Step 4: Put the lentils into a serving dish and place the cod on top, drizzling over any juices. Arrange the mojama on top of the cod and serve.

From Barrafina: A Spanish Cookbook by Sam and Eddie Hart and Nieves Barragan Mohacho (£25, Fig Tree)