The Chefman Indoor Grill produces less smoke than traditional indoor grills, so you can enjoy perfectly grilled food year-round without having to stand in the cold. With an extra-large 150 SQ. inch cooking surface you can cook multiple foods at the same time for a complete meal. Temperature control knob goes from warm to sear, for cooking a variety of food; corn, zucchini, tomatoes, burgers, steak, chicken, fish and more! To achieve that perfectly smoke-free grilling indoors, the water tray must be filled with water between the minimum and maximum line. The water instantly cools the grease that falls on it, preventing it from sticking to the tray or from smoking. To add additional water to the tray during cooking, partially remove the tray using the handle ~ do not pour water directly over the grill plate. For added safety, this unit boasts cool-touch handles, and overheat auto shut-off protection. The grill disassembles so you can easily clean the grill and removable water tray by hand or in your dishwasher, making clean up as easy as grilling!