Marshmallows are high-sugar, aerated confections that contain numerous air bubbles. When subjected to infrared heating, the internal air rapidly expands, and simultaneously, the surface sugars undergo caramelization and charring.
This video visualizes the heating response of marshmallows under infrared irradiation using a halogen line heater, observing morphological changes and smoke generation resulting from the combined effects of their aerated structure, high sugar content, and thermal properties.
Please check the following site for more information.
Related page:
Thermal Expansion and Fracture of Glass under High-Temperature Infrared Heating 
Heating of Polycarbonate Sheet by High-Temperature Infrared Heating 
Melting of Zinc by High-Temperature Infrared Heating 
Melting of Tin by High-Temperature Infrared Heating 
High-Temperature Magnesium Melting Process Using Infrared Heating 
5-4.Proper use of near-infrared heating and far-infrared heating 
6-6.High temperature heating method – Box heating 
No.89 Soil moisture measurement by infrared heating