We pack everything. We were told that peanut butter would cause a search because it won't scan. We pack dry cereal, oatmeal, dry pudding and jello, mac&cheese, etc. This trip we're also bringing microwave soup and ravioli. Hope it won't be a problem. I've heard of people packing waters, but we just get that down there.
I just looked on their site and couldn't find what you were referring to. The only thing I saw was no styrofoam coolers and perishable foods were at your own risk