Marinated mackerel fillets Deligusti is a cooked dish produced by the company Deligusti specialized in the preparation of seafood products. The marinated mackerel fillets are a tasty ready-to-eat dish. Pairings: Deligusti mackerel fillets is a ready-to-eat dish. We recommend heating it and consuming it with a drizzle of extra virgin oil and fresh parsley. Storage: store in the refrigerator.