The dye is made from sea snail (Hexaplex trunculus ... Moab, Edom, Damascus, Cyprus, etc,” Shalvi told All That’s Interesting. “The site was probably a key economic hub for the Kingdom ...

But halfway across the world, there's another type of snail that is just as popular. And it's called ốc, or "sea snails." In the streets of Vietnam, people have been eating them for centuries.