I have been looking into buying some gourmet salt, and several of them are described as being "moist salt". What does that mean?
Moist salts are naturally harvested sea salts from which not all the water has been removed. They are noticeably wet, often caking up or forming more of a "slush" than a powder.
Some aficionados only believe that sea salt is "real" and "natural" if it is moist. Me, I have enough humidity in the apartment.
They have some humidity in them. According to wikipedia, up to 13% of moisture is acceptable.