Chocolate is derived from the cocoa bean, cultivated at least since 200 BC. It has been worshipped by the Mayan people (and my wife) and used as a form of money by the Aztec civilization.
The Spanish nobles, in the 1500's, made it into a sweet drink and some in the French court believed chocolate to be an aphrodisiac.
In 1825 a Dutch chemist invented a press to combine cocoa butter with sugar to make chocolate "candy". In 1876, a Swiss candy maker mixed chocolate liquor with condensed milk and invented chocolate milk.