Napoleon black stone coconut briquettes are made from 100% natural coconut shells. When burning, they are smokeless, odorless, and flameless, adding more flavor to the food you will cook, but also making this process safer. These briquettes have a longer burn time than charcoal, as they have a burn time of around 6-8 hours, and also have less ash residue, which means less cleaning time for the barbecue. . A briquette measures approximately 6 cm, and is very efficient, as it has a high heat output.