Food Unwrapped Gets Chocolatey

A look back at some favourite chocolate-based investigations

A look back at some favourite chocolate-based investigations, including Kate Quilton's trip to a cocoa co-operative in Ghana to get to grips with the raw ingredient. Plus, Matt Tebbutt heads to one of the UK's largest chocolate factories to find out what makes white chocolate white and gets the inside story on After Eights - learning how the minty fondant in the middle remains gooey