Drizzle the oil into a frying pan. Put the sea bass into the cold pan, skin-side down. Put the pan over a medium–high heat. Fry for around 4–5 minutes, until the skin is crisp and golden.

Season, to taste, with salt and freshly ground black pepper. For the sea bass and lettuce, place the sea bass fillets onto a chopping board and, using a sharp knife, score the skin, at 1cm/½in ...