A mineral with use spanning millennia, salt today remains mostly hidden in kitchen cupboards, its once-precious rarity long forgotten in favour of widespread use beyond human consumption. Before being sealed into supermarket packets, it was mined and harvested across vast distances as a substance dense with value, capable of sustaining life by arresting its breakdown. Although seemingly more ordinary, it continues to embody an unusual duality: it preserves, yet it can sterilise soil, corrode materials, or render land utterly uninhabitable. Historically a vital commodity, traded, taxed, and fought over, it became entangled with systems of extraction within colonial economies. As...