Final answer:
The fat extracted from the cacao bean is called cocoa butter, which is known for its melt-in-your-mouth quality in chocolate.
Step-by-step explanation:
The fat that is extracted from the cacao bean is called cocoa butter. Although the provided reference material discusses the supercritical fluid extraction using carbon dioxide for decaffeination of coffee beans, which can be likened to the extraction process of cocoa butter from cacao beans, it specifically does not address the student's question about cacao beans. Cocoa butter is extracted from the cacao bean in a process where the beans are fermented, dried, roasted, and then pressed to separate the fat. This fat, cocoa butter, is known for its unique properties, such as its melting point, which is just below human body temperature, giving chocolate its distinctive melt-in-your-mouth quality.