I have a nine month old cat, Bindi, who is currently on Natures varity frozen raw Chicken, turkey and now another formula - raw Lamb. Problem is he only goes into it with gusto if I sprinkle Tuna water on the meat as its thawing out in a shallow bowl. I researched Tuna and found out its bad for cats because it takes away vitamen E. What about using Sardine oil? Or fish sauce, My dads girilfriend knows an asian flavoring dip that you use for spring rolls? Is this a good idea for cats? We need something strong and good tasting but also something not harmful. I saw Salmon oil at Chuck and dons but its expensive, is this better?