Ruby is a crimson rock salt that contains 13 natural minerals and has a rich and unique flavor that can be used in a limited way. It is 100% unbleached and natural that is just mined and crushed, so you can use it with confidence. It goes especially well with meat dishes, and brings out the goodness of the ingredients in simple meat dishes. * The unique flavor is softened by heating, so you can enjoy a different taste depending on whether you use it during heating or after serving. About Quality It is a rock salt made by cleaning and crushing the mined rough, visually removing impurities, and finally sifting it to a higher quality.