Is there dna in your food? how do you know?

There isn't until u eat it because ur saliva gets into ur food as u put ur fork or spoon in it so until u put a fork that u put into ur mouth then there would be DNA.

Yes, of course there is. If you are eating meat, its right in the cells. Just because the cells are dead, doesnt mean the DNA disappeared. It would take a while for it to disappear. If you are eating vegetables its there. Its in bread too because this is made from wheat, a plant. However, if you are eating rocks you would not find DNA.