The Weber Gourment BBQ System is a line of accessories designed to work inside the Genesis & Kettle Series replacement grate sets. Expand your grill potential! To use any of the products in this new system, simply purchase the specialized grills to fit your Weber. Each have a hole in the middle. You can then place any of the Weber Gourmet Barbecue System accessories in the hole and open up your barbecue to an entirely different cooking experience.