That was so many thousands of years ago, no one knows. It probably occurred before the development of writing.
Halite (rock salt) is used to flavor food and as a food preservative.
I use Accent, it's 60% less sodium than salt, and it wakes up the flavor in food. Adding salt while cooking brings out flavor.
Salt is a flavor enhancer.
Seasoning like salt, pepper, garlic, onion, chili powder, oregano, allspice can add enhance the flavor of the food. The seasonings you use depends on the food you will be making.
There is no one common way that chef's enhance the flavor of their food. Some professionals choose to used herbs for enhancement, some use kosher sea salt, others use cooking methods designed to hold in the flavor (searing meat and then cooking low until done).
They can be used for adding flavor to food. (salt)They are in daily vitamins and your body needs them.Jewelry
salt
They used the compound minerals in rocks to create salt. They used it to add flavor to bland food. Little did they know, but the compound was dirty and caused many incurable diseases.
You can use sugar, vanilla, maple, hot sauce, and spices. There are also salt substitutes.
Flavor. Bread bakes quite well without salt, but tastes bland.
Not unless you need to or to add more flavor. You can if you want, but salt isn't good for you and you should use it as little as needed.
I had never thought about using a sweet potato for salt extraction, but I always use a white potato. I think the sweet potato would flavor the foods whereas a white potato would absorb the flavor with the salt. An added note - don't leave the potato cooking until it completely cooks and gets soft or it will re-salt the food.