Nothing says holiday hostess gift better than sweet things in a pretty box. But here’s the dirty little secret behind mass-produced candy: The U.S. State Department estimates that more than 100,000 children work on the African farms where most cocoa is cultivated, and that 10,000 of those are victims of human trafficking and enslavement. Thankfully, fair trade certified cocoa is slowly but surely making its way into our markets. But what is fair trade, exactly?