Polenta con il merluzzo is a traditional dish made with coarse polenta flour as the main ingredient. Although there are several variations, other ingredients typically include anchovies, diced cod fillets, potatoes, olive oil, walnuts, garlic, onions, tomatoes, parsley, rosemary, and seasonings.
The onions are cooked in olive oil until lightly browned. The anchovies, garlic, walnuts, tomatoes, rosemary, and parsley are then added to the pan and cooked for a while until the cod and potatoes are also added to the pan. The dish is cooked until the potatoes are nearly falling apart and the sauce thickens.