Grilled Sardine Fillets in Olive Oil 90g. Delicius offers light grilling also for sardine fillets in olive oil. Here the scented taste of the sea, typical of Sardina pilchardus species, meets the pleasant aroma of the cooking fire. These fillets are also hand processed directly on fishing locations to guarantee the highest possible content of Omega 3 and to preserve sardines’s naturally exquisite taste.