Rice Cookers or rice warmers are self-contained electrical appliances used for cooking, storing and keeping rice at a servable temperature. They simplify the cooking process by automatically controlling the heat and timing, while at the same time freeing up a heating element on the hob.
Although the cooker does not necessarily speed up the cooking process, the cook's involvement in cooking rice with a rice cooker is reduced to simply using the correct amount of water and rice. Once the rice cooker is set to cook, it needs no further attention until it is finished.
Typically, a rice cooker contains an insulated outer container containing a heating element, into which is fitted a non-stick or teflon-coated inner removable bowl. Once the lid is closed and the cooking cycle has been activated, the appliance does the rest and can keep rice warm safely for up to 24 hours.
For best results, the water level should exceed the rice by ¾ inch or 2cm.