Our charcoal longburn briquettes are even cushion-shaped lumps, made by compressing from pure wood and natural starch binding agents for a steady and consistent cooking heat. They are quick to reach cooking temperatures and long-lasting for an average of 2.5-3 hrs of cooking time. They are even cushion-shaped lumps, made by compressing from pure wood and natural starch binding agents for a steady and consistent cooking heat. They are quick to reach cooking temperatures and long-lasting for an average of 2.5-3 hrs of cooking time. Gives you a more consistent cooking temperature across the BBQ grilling area for the best cooking results. Briquettes give a prolonged burn that is excellent for smokers and professional chefs.