Over the years many things have changed with people growing everyday but airline foods have not. Despite some big names in airline industry, meals of economy classes come in wrappers whereas business class provides real cutlery. In this link you will find a list of foods and how they vary with each other with the classes they are provided in. Some food provided in economy class are deliberately made to taste awful for ensuring that people who can afford expensive tickets, do buy them. Have a look at this list showing major differences in the food provided to both sections and how much they vary with each other.