Whether we’re supplying our spice cabinet or adding some extra flavor to a dish, salt is one of the first spices we grab. It’s such a kitchen staple it seems like it should be basic, but there are so many kinds out there that salt just isn’t simple anymore. When did it get so complicated, and what’s really the difference between table salt, kosher salt, sea salt and rock salt? Apparently it all comes down to shape, size and density. Helen Rennie explains the differences and the best use for each. Take a look, and take notes!