Can you tell me what makes salt kosher? Is there something added or done to the salt that makes it kosher?-- Ruth
'Kosher Salt' should really be referred to as 'Koshering Salt'. Kosher salt is the same sodium chloride compound that you find in other types of salt such as sea salt and table salt. What makes it different is that kosher salt has a larger grain size compared to, say, table salt. Also, it contains no additives such as iodine or anti-clumping agents.
According to Jewish dietary laws, meat that has just been butchered must be sprinkled with salt to draw out the blood. A finer grained or flakier salt would dissolve and run off of the meat. Kosher salt stays in place.
So kosher salt is regular, unadulterated salt that is made so that it is suitable to use for koshering.