"Real salt" may sound funny, but there is a large difference between real crystal, sea, and rock salt in comparison to "table salt." Real, unrefined salt products are clumpy and contain over 60 different trace minerals. Basic table salt, on the other hand, is nutritionally poor - it only contains 2 trace minerals - sodium and chloride. Everything else has been chemically stripped away. Apart from that, table salt also contains up to 3% anti-caking agents. Anti-caking agents are often made out of unhealthy heavy metals such as aluminum silicate or sodium ferrocyanide.