Close your eyes, and block your nose in order to see and smell nothing.

Ask someone to give you some food without saying what exactly you are going to eat.

Try to guess the taste of this food.

Most people will not be able to distinguish between boiled eggs and marshmallows. This occurs because your brain usually knows the taste of products by their odor. If there is no odor, there is no taste. The trick is used by smart kids when they are made to eat "healthy food" they don’t want or like.