How does infrared radiation cook food?

Radiation. Radiation is the transfer of energy through waves of electromagnetic energy that travel rapidly through space. read more

Cooking with infrared. All objects give out and take in infrared radiation. The hotter an object is, the more infrared radiation it emits. Very hot objects may glow, such as the heating element in a toaster or an electric fire. Other hot objects may not glow, such as an iron. read more

Infrared cooking methods rely on radiant energy, much as your microwave oven does. It's less efficient than direct heat conduction but much quicker than conventional roasting or grilling, because it causes the food to heat itself. read more

The same way that almost all infrared radiation cooks (or heats) any sort of matter. That is, unless you are specifically referring to how human food is cooked. The small amount of intimate contact transmission (or microwave), heating can be dismissed because infrared still rules the day (as with most of the universe). read more