Layered sardine salad is a tasty and very beautiful dish that will perfectly complement both a holiday table and a family dinner. The benefits of sardines are difficult to overestimate, since the fish is rich in omega-3 fatty acids, which reduce the load on the heart, blood vessels and endocrine glands. Sardines also contain B vitamins and microelements, in particular iron, which prevent anemia. B vitamins also have a tonic effect on the nervous system.