and sea salt. Table salt is mined from underground deposits "and then processed to give it a fine texture so it’s easier to mix and use in recipes," writes the American Heart Association (AHA).

Narrator: The process starts by cutting 3-year-old bamboo into uniform trunks, leaving one side closed as a container for the salt. Sea salt from the west coast of Korea is densely packed by hand ...

Sea salt is made by evaporating seawater using the sun or indoor heaters. It's not as processed as table salt, but there are normally no extra chemicals added, and its natural minerals stay intact.

Margneritte, of Paris, well-known as a distinguished chemist, has discovered a valuable mode of purifying rock and sea salt. The latter ... by the dry process, which corresponds with ...