Re: If you can put iron in cereal, can you take it out of cereal?

> If you can put iron in cereal, can you take it out of cereal?

Sure!  But it might not be as easy as you think.  When a food company 
wants to check the nutrient value of a particular food, they treat the 
food with a variety of chemicals, depending on which nutient they are 
trying to measure.

These chemical treatments make the rest of the food inedible, and the 
nutrient of interest (iron, for example) is chemically reacted with other 
chemicals to make it easier to measure.  Those other chemicals might cause 
a color change for example.  The amount of color change is related to the 
amount of nutrient present.

So, in the end the iron is removed, but the cereal is destroyed, and the 
iron itself may also be changed to another chemical form, so you can't 
really get any "useful" iron in this way.