In article >,
"Kent" > wrote:

> I think the reference to "trace impurities" refers to "trace minerals".
> Pure salt is NaCl. Highly pure salt is Kosher NaCl[I think, though it
> probably has something to do with the way it's produced].

Regular salt and kosher salt are both purified salt. Kosher salt is
produced in flakes, rather than granules. This makes it more suitable
for its intended purpose, which is koshering.

--
Dan Abel
Petaluma, California USA