Chocolate Train Food Art, Brussels, Belgium

A study reported by the BBC indicated that melting chocolate in one's mouth produced an increase in brain activity and heart rate that was more intense than that associated with passionate kissing, and also lasted four times as long after the activity had ended.
Labelling
Some manufacturers provide the percentage of chocolate in a finished chocolate confection as a label quoting percentage of "cocoa" or "cacao". It should be noted that this refers to the combined percentage of both cocoa solids and cocoa butter in the bar, not just the percentage of cocoa solids.