As an article on website Delish explains, the two salts are very different. While many people might not know that, the difference between the two is important:
First of all, let's establish that “table salt” isn't a cute little nickname or anything. They are definitely two different salts, and they get mixed up a lot.
The article goes on to explain that kosher salt's crystals are larger and flakier than table salt's.
So how does that affect cooking? When you weigh the exact amount of the two salts, 1/4 cup of table salt weighs almost twice as much as Kosher salt, which is why you seriously need to use the type of salt called for in the recipe, or you'll end up with some pretty inedible meals.
But what about when they specify “salt, to taste?” Then literally do just that—add it to taste. It doesn't matter which one you use, because all salts taste the same.
We've read recipes that specifically called for kosher salt, but we never thought much about the difference. We're glad we used the right kind, because we'd hate to think of ruining an entire dish over something as simple as a condiment!
Article Source: Delish
Very helpful. Thank you!