The whole film is worth a watch for the lessons it gives in the use of extrinsic and intrinsic cues and how these are exploited due to consumers’ problems with predictive value and confidence value.
In the clip below see how (small quantities of salad is strategically used to give fast food the ‘halo’ of being healthy (low predictive value vs. high confidence value). And even more cynically grill marks are used to make the fried chicken look healthier than it really is.