system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's the chemical reaction that makes cream solid when whipping it?

And what are the requirements for making a liquid a solid by doing this motion?
gpt
Cream has a very high fat content. The process of mixing/whipping introduces air and also agitates the fat globules causing them to assemble into chains and aggregates that begin to form around the air bubbles. These aggregates can go on to interact with neighboring air/fat bubbles resulting in a connected fat network that traps the air and appears voluminous and fluffy.