Students were introduced to the idea that metals (specifically iron) are acquired from our diet through an "Iron in Cereal" experiment. The iron found in cereal is Fe 0 and magnetic and is a perfect example of how food provides metal cofactors, essential nutrients to the body. For this demonstration, 1 cup of iron-enriched cereal (22.35 mg of iron/serving) in a re-sealable bag was crushed into small pieces. To this, warm water was added, and the mixture was stirred well using a plastic utensil. While one student mixed the cereal, a second student held a strong magnet (like neodymium) to the side of the beaker for the iron particles to gather. The requirement of iron within the diet is generally appreciated, however, the connection between the iron in the diet and its function in our bodies is not clear to the general public. The cereal experiment coupled with the catalase experiments bridges that gap.