Chocolate whether emulsifying agents are added. Different manufacturers develop their own "signature" blends based on the above formulas, but varying proportions of the different constituents are used. The finest, plain dark chocolate couvertures contain at least 70% cocoa (both solids and butter), whereas milk chocolate usually contains up to 50%. High-quality white chocolate couvertures contain only about 35% cocoa butter. Producers of high-quality, small-batch chocolate argue that mass production produces bad-quality chocolate. Some mass-produced chocolate contains much less cocoa (as low as 7% in many cases), and fats other than cocoa butter. Vegetable oils and artificial vanilla flavor are often used
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