I would've guessed candy or liquor, but no. The most frequently stolen food on Earth is actually cheese:
Almost four percent of the world's cheese supply ends up stolen, putting cheese ahead of other frequent grocery targets like candy and alcohol. Shoplifting rates as a whole are going up, because, hey, times are tough. "For the past six months, [retailers] have been affected by bad news—economic slow down, government cuts and now an increase in shoplifting," one retail analyst told Sky News.