What happens when you mix chocolate milk and dry ice?

When dry ice (solid carbon dioxide) is added to chocolate milk, it undergoes sublimation, meaning it transforms directly from a solid to a gas without passing through a liquid phase. As the dry ice sublimes, it rapidly releases carbon dioxide gas, causing intense bubbling and fizzing in the chocolate milk. The evolution of gas creates a mesmerizing, smoky effect as the mixture froths and foams up, resembling a bubbling volcano or a carbonated soda fountain.

This reaction is accompanied by a drop in temperature, further cooling down the chocolate milk and potentially making it slushier. The addition of dry ice also infuses the chocolate milk with a mild carbonic acid taste, reminiscent of soda or seltzer water.

It's important to note that handling dry ice requires caution. Proper safety precautions, such as gloves, eye protection, and well-ventilated areas, should be taken when working with dry ice due to its extremely cold temperature and the potential for releasing high amounts of carbon dioxide gas.