Background:
Even the most un-choosy eater cares at least somewhat about the visual appearance of food. A food item that looks “off” somehow will trigger a natural aversion to spoiled food.
Proposal:
This aversion to bizarre looking food can be used to help people maintain a healthy diet!
The process is as follows: certain foods that are especially high in calories can be modified with food coloring to look completely disgusting.
So for example, we could have french fries that are dyed a dark purple, or a piece of white bread that has been dyed gray.
Fig. 1: Food that looks “off” (maybe it’s the wrong color, or has a disgusting oily sheen to it) will be less likely to be immediately devoured without a thought.
Fig. 2: Restaurants can also help out by modifying their food. Instead of a normal delicious-looking hamburger and fries, here we have a strange dyed monstrosity. Maybe more people will order a salad now. (In order to prevent the salad from being equally caloric, the dressing would have to be dyed as well.)
Conclusion:
This is the ultimate culinary tip for the discerning gourmet.
PROS: Extremely low-cost, helps deter over-eating.
CONS: Does not work in low-light conditions (for example, when ordering food at a movie theater).
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