It has to deal with the processing and the additives and anti-clumping agents; since table salt is finer and has been processed more, and its grains are looser than a cheerleader on prom night, it dissolves very quickly.adciv wrote:Last I checked NaCl was NaCl. How does the other stuff affect the dissolving?Wrench wrote:Kosher doesn't cut it for everything though; for instance, kosher salt doesn't dissolve in cold liquids, where table salt will.
If you ever get a chance to, taste a few grains of table salt on your tongue, then taste a few grains of kosher. Although molecularly very similar, kosher salt has a much "cleaner" salt taste, it dissolves more slowly in your mouth, the crystals cling to your tongue more. Or, if you don't like the idea of tasting salt, next time you cook a steak, while it's raw put kosher salt on one side and table salt on the other, and let it sit for five minutes, then feel both sides. On the kosher side, you'll still be able to feel the grains, while the table salt will be mostly dissolved.