This video presents the heating behavior of hard candy subjected to infrared irradiation using a halogen line heater.
Hard candy, being a high-sugar amorphous solid, rapidly softens and dissolves under infrared heating, leading to foaming phenomena due to sugar decomposition.
Please check the following site for more information.
Related page:
Expansion and Charring of Marshmallows by Infrared Heating 
Heating of Polycarbonate Sheet by High-Temperature Infrared Heating 
Melting of Tin by High-Temperature Infrared Heating 
Melting of Zinc by High-Temperature Infrared Heating 
High-Temperature Magnesium Melting Process Using Infrared Heating 
Thermal Expansion and Fracture of Glass under High-Temperature Infrared Heating 
5-4.Proper use of near-infrared heating and far-infrared heating 
Infrared Localized Heating for Visualizing Heat Transfer in Graphite Rods