New Mexico Clay - Chocolate (Cone 5/6) Chocolate Clay is a rich, dark Hershey brown stoneware that approaches an almost black hue once fired. This smooth clay offers a texture similar to porcelain but with superior plasticity, making it exceptionally easy to throw. It is ideal for creating striking pieces with glazes that pop against its deep, dark color. For the best results, fire at medium speed to cone 5 and hold for 10 minutes. This approach ensures optimal glaze fit and color development, enhancing the overall finish of your work.