Is it sea salt or kosher salt that restaurants use when baking their potatoes?
Almost all restaurants worth eating at use kosher salt. The reason for this is that kosher salt is easily dispensed by hand as the flakes are much larger. This type of salt also lacks the iodine that is found in table salt. Since restaurant’s make large batches of food items at once using just table salt can lend a faint (but disgusting) iodine flavor to the food. Kosher salt is relatively cheap and can be found in the same grocery store aisle as regular table salt. Sea salt can also be used but probably won’t be just because it tends to be a bit more expensive. There are thousands of different types of sea salt from around the world that all have different flavors and textures. Some of these are even smoked to add more complex flavors to a dish. These types os salt are usually just a finishing touch on a really nice plate of food you would get at a really fancy, high-end place. The salt on the potatoes you mention has a 99.5% chance of being kosher salt.
