Chocolatiers explain why bars can develop those white, chalky streaks — and how to keep bloom at bay.

Add Yahoo as a preferred source to see more of our stories on Google. The white film or streaks on chocolate, called bloom, are harmless and result from temperature or humidity changes. Bloomed ...

The white film or streaks on chocolate, called bloom, are harmless and result from temperature or humidity changes. Bloomed chocolate is still perfectly safe to eat—it just loses its smooth texture ...