They showed the vats of chocolate where people were stirring in things, and those evoke a lot of interesting sensations in people, a lot of interesting reactions in people because fat is inherently tasting good to us because it--there's reason for it to taste good because it provides so many calories.

人们往大桶巧克力中搅拌其他食物,这唤起了人们许多有趣的反应,这些反应很有意思,因为脂肪对人类来说是天生的美味,味道不错的原因是,脂肪提供了如此之多的热量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选