I have a few recipes that call for flaked salt, I can only seem to buy it in bulk 1kg bags here. I want to know that if you use "salt" in a recipe does it really matter to the final taste what kind of salt you use. I do understand that for example when I use it on top of a foccaacia bread or something similar it does create a nicer texture, enhancing the taste, but this is in the final stages of cooking. When its used through the initial stages of the cooking process, like in a stew, bread dough etc does it make any difference ?
Salt (Sodium chloride) is salt. As a topping, flakes are commonly used purely for presentation purposes only. The taste is the same, but gets more intense as the salt particles get finer, so use less if the salt is in powder form
As an ingredient, use any form you are happy with, and is economical to use. Once salt is dissolved into water it will be identical to any other form of salt
For health reasons, finely powdered salt is preferable as much less is required to impart a salty taste
Something else to keep in mind is the volumetric measurements that the recipe is using. If they are referring to a "teaspoon" of flaked salt to create the desired salinity, that will be a very different measurement in, say, kosher salt or table salt. I have pushed more and more towards weighted measurements of ingredients for that very reason. 5g of flaked salt is going to be just as salty as 5g of kosher salt (pound of bricks vs a pound of feathers anyone?).
So while the saltiness factor is all the same with sodium chloride, the amount you use can differ.