Think about the classic white shaker on every restaurant table. Most of the time we look right past it or ignore the invisible flavor in the small packets stacked next to the pepper. But stop for a moment, and consider salt’s history and presence — how far it traveled, what form it originally started in, how many people were involved just to get it to your table. It gets more interesting. Salt has inspired wars, funded the Great Wall of China, it’s been considered divine, it’s the name of cities, it has been used as currency. Today, it has over 14,000 uses and is considered a luxury in some parts of the world, while Americans just consume about a teaspoon and a half a day.