Is there any food that doesn't have DNA in it?

I hope this is some spoof that just went viral, but since the Washington Post is the source, this may be true….That 80% of Americans want FDA labeling on food that contains DNA.

In the article it says, “Most food contains DNA….” which implies that some food doesn’t contain DNA.

I thought maybe Jello, however, the gelatin comes from various animal by products.