Because they are looking for order and explanations in a world which is sometimes chaotic, some children tend to assume that all actions are guided by values, even when some actions are based on whim. One little girl knew her parents did not drink alcohol because they were morally opposed to it. They also did not drink coffee or use black pepper. The little girl assumed the parents held a moral stance against coffee and pepper similar to their anti-alcohol position. It was then that the parents explained that they simply did not like pepper, and there was nothing wrong with using it.
Values related to food can include many things.
Sugar is bad for you. A good meal always includes a dessert. It helps to eat when you are depressed or upset. Fresh fruit is a good snack. The way to a man's heart is through his stomach.