Chocolate Bloom Happens

That grey film that covers chocolate is called bloom and it is stil Ok to eat the chocolate. Depending on how the chocolate was “mistreated” by exposure to warm temperatures or too humid environments, the bloom is either sugar or cocoa butter coming to the surface of the chocolate. 

If a chocolate is bloomed I’ll still eat it even though the texture and possibly the flavor delivery is different than intended by the chocolate maker. Most often when I have a bar that has bloom I’ll melt it into sipping chocolate where all blooming challenges disappear.