Salt

Salt does not need to be smelted to become what it is. Salt can be found at the level of Coal, which makes it very common, Salt can also be found in Town Bars, or Town Restaurants.

Salt is used for getting rid of some bugs, used for cooking, they can also be eaten, although you will have the Naesea effect for 0:04 - 0:10 Salt can be turned into blocks, so it will take up much lesser space.