Oven technology is divided into: electric oven, steam oven, oil oven, microwave oven, etc. Microwave ovens are conducted through the radiation of electromagnetic energy, so that water molecules absorb microwave energy, produce rapid molecular vibration to obtain kinetic energy, to achieve the gasification of water. Electric ovens are baked by electric heating.

Compared with the casual food made by frying technology, oven technology contains low oil content, the product does not contain oil or less oil, and crispy and delicious, with fast heating speed, short time, high product quality, uniform heating and equipment covers an area of less. It can be expected that the oven technology is a direction of development of puffed food production technology.