Microwaves
Using microwaves is a well-known method for rapid heating of food in the thousands of homes, but not so much used in the food industry. The use of microwaves can save a lot of time and energy compared with other methods of heating food. It is still expensive to produce microwave tunnels that provide stable temperatures in the food without it getting too hot in some parts and too cold in other parts of the food. Work is underway to solve this.