Sardine Fillets in Brine 120g. Delicius also offers the filleted version of the highest quality sardines so that it is even easier to appreciate the taste of the sea, typical of Sardina pilchardus species. Sardine fillets are hand-processed directly on fishing locations to guarantee the highest possible content of Omega 3 and to preserve sardines’s naturally exquisite taste. Natural brine preserve is addressed to those who prefer to reduce calories without giving up on good taste.