Chocolate remained an aristocratic nectar until Dutch chemist Coenraad Johannes van Houten in 1828 invented the cocoa press, which revolutionized chocolate-making. The cocoa press could squeeze the fatty cocoa butter from roasted cacao beans, leaving behind a dry cake that could be pulverized into a fine powder that could be mixed with liquids and other ingredients, poured into molds and solidified into edible, easily digestible chocolate. The innovation by van Houten ushered in the modern era of chocolate by enabling it to be used as a confectionary ingredient, and the resulting drop in production costs made chocolate affordable to the masses.
In 1847, British chocolate company J.S. Fry & Sons created the first solid edible chocolate bar from cocoa butter, cocoa powder and sugar. Rodolphe Lindt’s 1879 invention of the conching machine, which produced chocolate with a velvety texture and superior taste, and other advances allowed for the mass production of smooth, creamy milk chocolate on factory assembly lines. You don’t need to have a sweet tooth to recognize the familiar names of the family-owned companies such as Cadbury, Mars and Hershey that ushered in a chocolate boom in the late 1800s and early 1900s that has yet to abate. Today, the average American consumes 12 lbs. of chocolate each year, and more than $75 billion worldwide is spent on chocolate annually.