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.