Chocolate Festival, Kiev, Ukraine

Until the 16th century, no European had ever heard of the popular drink from the Central and South American peoples. It was not until the Spanish conquest of the Aztecs that chocolate could be imported to Europe. In Spain it quickly became a court favorite. In a century it had spread and become popular throughout the European continent. To keep up with the high demand for this new drink, Spanish armies began enslaving Mesoamericans to produce cacao. Even with cacao harvesting becoming a regular business, only royalty and the well-connected could afford to drink this expensive import. Before long, the Spanish began growing cacao beans on plantations, and using an African workforce to help manage them. The situation was different in England. Put simply, anyone with money could buy it. The first chocolate house opened in London in 1657. In 1689, noted physician and collector Hans Sloane developed a milk chocolate drink in Jamaica which was initially used by apothecaries, but later sold to the Cadbury brothers in 1897.
Chocolate in its solid form was invented in 1847. Joseph Fry & Son discovered a way to mix some of the cocoa butter back into the dutched chocolate, and added sugar, creating a paste that could be moulded. The result was the first modern chocolate bar.
For hundreds of years, the chocolate making process remained unchanged. When the people saw the Industrial Revolution arrive, many changes occurred that brought about the food today in its modern form. A Dutch family's (van Houten) inventions made mass production of shiny, tasty chocolate bars and related products possible. In the 18th century, mechanical mills were created that squeezed out cocoa butter, which in turn helped to create hard, durable chocolate. But, it was not until the arrival of the Industrial Revolution that these mills were put to bigger use. Not long after the revolution cooled down, companies began advertising this new invention to sell many of the chocolate treats we see today. When new machines were produced, people began experiencing and consuming chocolate worldwide.