When you see grey streaks or powder looking on the chocolate does that mean it is stale?
No. Although the appearance of the chocolate is compromised, this does not mean it is old. It could mean that the chocolate was not in the right temperature zone when it was being molded to its present state and this results in what is known as “sugar bloom” or “fat bloom”; where the cocoa butter in the chocolate separates when it is being made. The chocolate may taste just as delicious but the appearance and possibly the texture is not as appealing.