Turn that steak dinner into a true event with the Steakstones Hot Cooking System ($140). Steakstones work by taking the lava stone and heating it in the oven for about 20-40 minutes.The stones stay hot for about 30 minutes allowing you and your guests to cook your meat exactly the way you like it. Smaller individual sets are also available so your guests can have their own stones. Individual Steakstones include spots for sauces and a serving plate.