Accurate blue salt—like Persian Blue Salt—emanates from mineral deposits located in Iran and elements of the Himalayas. Its hanging tint is completely pure, developed by a trace mineral identified as sylvite, which refracts mild to provide the crystals a neat, icy glow. That’s why the blue salt trick recipe https://www.commandlinefu.com/commands/view/25791/extract-content-between-the-first-and-the-last-double-quotes