Dark chocolate is a form of chocolate made from cocoa solids, cocoa butter and sugar. It has a higher cocoa percentage than white chocolate, milk chocolate, and semisweet chocolate. Dark chocolate is valued for claimed—though unsupported—health benefits, and for being a sophisticated choice of chocolate. Similar to milk and white chocolate, dark chocolate is used to make chocolate bars and as a coating for confectionery.
Dark chocolate gained much of its reputation from an effort by French chocolatiers in the late 20th century to assert a preference for dark chocolate in the French national palate, over milk chocolate. As this palate was exported to other countries, such as the United States, the associated values of terroir, bean-to-bar chocolate making and gourmet chocolates followed. Due to the high cocoa percentage, dark chocolate can contain particularly high amounts of heavy metals such as lead and cadmium.
Dark chocolate has a more bitter and intense flavor than other types of chocolate, and compared to other types of chocolate, is reliant on the quality of the cocoa beans and cocoa butter used as ingredients. Making dark chocolate involves a process of mixing, refining, conching, and standardizing. Government and industry standards of what products may be labeled "dark chocolate" vary by country and market.