Ever since the Vikings, Norwegians have exported stockfish, cod that has been dried on huge wooden frames out in the cold, crisp winter air. Dry as a tree bark but rich in protein and low in fat, it has been the perfect travelling – and trading companion. Today, the top destination for stockfish is, perhaps surprisingly, Nigeria. So why do Nigerians spend millions of dollars each year on Norwegian cod?

This post was originally published on The Documentary Podcast.