Cocoa solids require the addition of extra cocoa butter to cocoa liquor, leading to a cocoa solids surplus and thus a relatively cheap supply of cocoa powder. This contrasts with the earliest European usage of cocoa where, before milk and dark chocolate was popularized, cocoa powder was the primary product and cocoa butter was little more than a waste product. Cocoa solids contain flavanol antioxidants, amounts of which are reduced if the cocoa is subjected to acid-reducing alkalization. Health benefits have been attributed to cocoa flavonoids. Natural cocoa powder has a light brown color and an extractable pH of 5.3 to 5.8.
Hot chocolate chocolate is often served at breakfast time; sometimes sliced bread spread with butter, jam, honey, or Nutella is dunked into the hot chocolate. In Germany, hot chocolate made by melted chocolate ("Heiße Schokolade Wiener Art") is distinguished from those made from powders ("Trinkschokolade"). It is often served with whipped cream on top. Even further variations of hot chocolate exist. In some cafes in Belgium and other areas in Europe, one who orders a ""warme chocolade"" or ""chocolat chaud"" receives a cup of steaming white milk and a small bowl of bittersweet chocolate chips to dissolve in the milk. One Viennese