Commercial brands of slow cookers, such as Vollrath, Nemco and APW Wyott, offer 11-quart units. The largest slow cookers available from consumer brands such as Crock-Pot, Elite Platinum and Hamilton Beach are typically 7, 8 or 8.5 quarts.
Commercial warmers with adjustable heat control are designed for the food service industry and can be used for reheating or slow cooking. Since busy kitchen workers often multitask, countertop warmers allow them to set a specific temperature and passively cook low-maintenance foods, such as soup, while attending to other preparation tasks. Warmers are also useful for maintaining a precise temperature to keep hot food fresh. Multipurpose high-capacity countertop cookers and warmers with thermostatic control are available from commercial sellers such as WebstaurantStore, Central Restaurant Products and FoodServiceWarehouse.