It will make them unable to know what ingredients are in foods that they eat, what it contains, because if they make the food yourself, you can put the ingredients handy.
It will make them unable to know what the ingredients are in the foods they eat, it consists of anything because if they do it by yourself, it can be useful ingredients to it.
It will make them don't know what ingredients in the food they eat it equipped with anything, because if they cook by themselves, it can be useful to put the ingredients.