This is beyond awesome. Steganography is the art of hiding something in something else. It is most often used to refer to hiding information in digital images in such a way that the image is not altered to the human eye. This is useful because viewers don’t know there is an encrypted message in the image as they would if they looked at encrypted text.
Some crazy kids have worked out (theoretically) how to use flavour additives to do food steganography (PDF). Just imagine if it was easy to get people to eat their greens, make the cat take a pill, etc.