Use gas as a fuel to cook ingredients directly in the bowl. The maximum temperature is determined by the products in the bowl. This heating method is appropriate for items that require a higher-temperature cooking process to release greater aroma
Heaters, which are powered by electricity, heat the thermal oil within the jacketed area. Then the thermal oil indirectly heats the ingredients. Its temperature control allows it to cook food at a consistent temperature. This method of heating is safer and more suitable for places where gas and steam are not available.
Steam from a steam boiler enters the jacketed space through the pipe and heats the food indirectly. Because this form of heating is so energy efficient, it’s great for mass manufacturing. This temperature control is a personal preference.