Have you ever thrown out old chocolate that had taken on a chalky, white hue, unsure if it was still edible? You're not the only one. Food scientists say the harmless change, known as fat blooming, is ...

If you’re a fan of chocolate, you’ll probably eat pretty much anything, from candy bars to cake to Easter bunnies. The only thing that might give you pause—besides the caloric count—is a white, chalky ...