Easy Charcoal Grilling On The Go. Now you can enjoy authentic charcoal cooking on the go, without the mess. The portable, CUBE is designed for impromptu grilling away from home. With an integrated food-grade storage tray, preparation board and porcelain enamel firebox, it’s easy to store, set up, cook and clean responsibly, while the chrome handles keep external heat to a minimum, making it easy to move while cooking.