Ideally your dark chocolate will have as high cocoa content and as low sugar content as possible. (supernaturalacnetreatment.com)
I'm also quite particular about the quality of the chocolate I consume, preferring the expensive sort with high cocoa content. (bookbrowse.com)
I finally dug out a dark chocolate candy bar (one of the artisanal, high cocoa content varieties) and chopped it up & stirred it in. (smittenkitchen.com)