The use of stones or rocks for cooking is not altogether new...It goes back to 18,000 B.C. The natural ability of stones to retain and radiate heat has made it the ideal cooking source through a diverse range of cultures. Lava rocks are pieces of crushed volcanic stone placed under the food on a special grate or plate. They collect juices and fat that drip down from the cooking area. When the juices contact the hot rocks, they produce smoke, which wafts up around the food. The result is a flavor
